<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 55-year-old woman comes to the physician with concerns about swelling and pain in her right breast. Physical examination shows erythema and prominent pitting of the hair follicles overlying the upper and lower outer quadrants of the right breast. There are no nipple changes or discharge. A core needle biopsy shows invasive carcinoma of the breast. Which of the following is the most likely explanation for this patients skin findings?? A: Bacterial invasion of the subcutaneous tissue, B: Obstruction of the lymphatic channels, C: Involution of the breast parenchyma and ductal system, D: Infiltration of the lactiferous ducts, E: Tightening of the suspensory ligaments,  <response>: This is a medical question asking about the likely explanation for skin findings in a patient with breast cancer. Based on the description, the patient has erythema and pitting edema over the breast area. This suggests an issue with fluid drainage from the breast, likely due to obstruction of the lymphatic channels. Choice B Obstruction of the lymphatic channels seems the most plausible explanation.B: Obstruction of the lymphatic channels 