system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Increased susceptibility to breast cancer is likely to be associated with a mutation in the following gene -a) P53 b) BRCA-1 c) Retinoblastoma (Rb)  d)  H-Ras
assistant
The correct answer is  None