<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 40-year-old woman residing at an iodine-deficient endemic area presents to the physician with a painless and gradually progressive anterior neck mass. She has occasional dysphagia, but has no history of prior head and neck irradiation. The examination shows a mass that moves with deglutition, suggesting a thyroid mass. An ultrasound of the neck reveals a 3 cm x 3 cm 1.2 in x 1.2 in mass in the right thyroid lobe with punctate microcalcifications, hypoechogenicity, irregular margins, and enhanced vascularity. There is no cervical lymphadenopathy. Her serum TSH is 3.3 mUL, serum T3 is 2.2 nmolL, and serum T4 is 111 nmolL. An FNAC of the nodule shows abundant follicular cells suspicious of follicular neoplasm. A right lobectomy with isthmectomy is performed. Which of the following histopathological finding is diagnostic?? A: Presence of Psammoma bodies, B: Well-differentiated follicular cells without vascular invasion, C: Follicular cells that lack nuclear atypia, with capsular and vascular invasion, D: Hyperplastic parafollicular C cells, E: Highly undifferentiated malignant cells with areas of necrosis and inflammation,  <response>: This is a clinical vignette describing a 40-year-old woman with a thyroid nodule suspicious for malignancy. Key findings include the patients demographics middle-aged woman in an iodine-deficient area, symptoms dysphagia, physical exam palpable thyroid mass moving with swallowing, imaging hypoechoic nodule with microcalcifications and irregular margins, lab values normal TSH, T3, T4, and cytology follicular neoplasm. The question asks which histopathological finding would be diagnostic following a right thyroid lobectomy. The choices describe various histological patterns seen in thyroid nodules. Choice A describes psammoma bodies, which are calcified concentric laminated structures seen in papillary thyroid carcinoma. Choice B describes a benign follicular adenoma. Choice C describes a follicular carcinoma with capsular and vascular invasion. Choice D describes C cell hyperplasia, unrelated to the clinical scenario. Choice E describes an undifferentiated anaplastic thyroid carcinoma.Based on the clinical presentation, the most likely diagnosis is a follicular thyroid carcinoma. Therefore, the diagnostic histopathological finding would be choice C, which shows follicular architecture with capsular and vascular invasion.C: Follicular cells that lack nuclear atypia, with capsular and vascular invasion 