This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Following is not true about the gene mutations leading to breast carcinoma - 
Select and explain. 
A. Most common mutation in inherited breast carcinoma is BRCA1, B. BRCA 1 mutation is present in most of the cases of breast carcinoma, C. Inherited breast carcinomas make about 3 % of the total cases, D. p53 mutation also increases chances of colon and brain cancer
B: BRCA 1 mutation is present in most of the cases of breast carcinoma
Answer: B: BRCA 1 mutation is present in most of the cases of breast carcinoma 
Explanation: Answer- B. BRCA 1 mutation is present in most of the cases of breast carcinomaGenetic mutations associated with breast cancer are of two types -i) Germline mutations (inherited mutations)Involved in familial cases of breast cancer.ii) Somatic mutations (acquired mutation)Involved in sporadic cases of breast cancer