This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small and Large Intestines, Subject name: Pathology
Which statement is false regarding familial adenomatous polyposis : 
Select and explain. 
A. Males are usually carriers, B. Autosomal dominant inheritance, C. If not treated progress to malignancy in 100% of cases, D. Males and females are affected equally.
A: Males are usually carriers
Answer: A: Males are usually carriers 
Explanation: Ans. is 'a' i.e. males are usually carriers Familiar polyposis coli is an autosomal dominant* condition affecting males and females equally.It is characterized by presence of thousands of adenomatous polyps throughout the large bowel.Carcinomatous change* supervenes in these polyps in 100% of cases by the age of 30-35yrs.Therefore prophylactic colectomy is done. *