<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 60-year-old white man with a past medical history significant for hypertension and hyperlipidemia presents to his family medicine physician with concerns about a spot on his ear. He has been a construction worker for 35 years and spends most of his time outside. His family history is insignificant. On physical examination, there is a dark lesion on his left ear. The patient states that he has always had a mole in this location but that it has recently become much larger. A review of systems is otherwise negative. Which of the following lesion characteristics is reassuring in this patient?? A: Irregular, indistinct borders, B: Size greater than 6 mm, C: Lesion asymmetry, D: Changing over time, E: Single, dark color,  <response>: This is a clinical vignette about a 60-year-old man with a concerning skin lesion on his ear. The key details in the stem are his age, history of sun exposure, family history, and the description of a dark lesion on his ear that has recently enlarged. The question asks which lesion characteristic is reassuring in this patient.To answer this, I need to consider the typical features of benign vs malignant skin lesions. Benign lesions tend to have smooth, regular borders and be symmetric in shape. Malignant lesions often have irregular, indistinct borders and asymmetry. A lesion that is changing over time raises suspicion for malignancy. A single, uniform color is more reassuring than multiple colors. Based on this, choice E Single, dark color sounds most reassuring as it suggests a benign lesion. Choices A, B, C, and D all describe features that are more worrisome for malignancy.E: Single, dark color 