This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis of Pregnancy, Subject name: Gynaecology & Obstetrics
Heparin when given In pregnancy should be supplemented with 
Select and explain. 
A. Zinc, B. Calcium, C. Folic acid, D. Ferrous sulphate
B: Calcium
Answer: B: Calcium 
Explanation: Heparin-Induced Bone loss may develop with long-term heparin administration--usually 6 months or longer--and is more prevalent in cigarette smokers Un-fractionated Heparin can cause osteopenia, and this is less likely with LMWH Women treated with any heparin should be encouraged to take a daily 1500-mg calcium supplement.