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: Psychiatry
Congenital Anomaly produced by lithium therapy is : 
Select and explain. 
A. Limb shortening, B. Anencephaly, C. Heart block, D. Renal agenesis
C: Heart block
Answer: C: Heart block 
Explanation: Intake of lithium in pregnancy can cause congenital heart disease (Ebstein's anomaly) in the fetus.