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: Pediatrics
The most common anomaly seen in the fetus of a mother taking lithum carbonate is - 
Select and explain. 
A. Cardiac deformities, B. Neural tube defect, C. Limb reduction, D. Genitourinary de formi ties
A: Cardiac deformities
Answer: A: Cardiac deformities 
Explanation: Ans. is 'a' i.e., Cardiac deformities o It causes Ebstein anomaly.