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: Gynaecology & Obstetrics
Increased gestational period is associated with following congenital anomaly : 
Select and explain. 
A. Spina bifida, B. Anencephaly, C. Meningomyelocele, D. Omphalocele
B: Anencephaly
Answer: B: Anencephaly 
Explanation: Anencephaly