Problem: A 50-year-old woman presents to the clinic for a regular follow-up. Her sister, aged 43, has been recently diagnosed with breast cancer. She was found to have the BRCA1 mutation. The patient requests genetic testing, which turns out to be negative. Which of the following is the next best step in the treatment of this patient, according to the US Preventive Service Task Force? Need Assignment Help service? A. MRI of the breast B. Mammograms every 6 months C. Prophylactic bilateral mastectomy D. Mammograms every 2 years