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: Social & Preventive Medicine
Contraindication of O.C.P - 
Select and explain. 
A. Liver disease, B. PID, C. Renal disease, D. Epilepsy
A: Liver disease
Answer: A: Liver disease 
Explanation: Ans. is 'a' i.e., Liver disease