This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contraception, Subject name: Gynaecology & Obstetrics
Which one of the following is the ideal contraceptive for a patient with hea disease : 
Select and explain. 
A. IUCD, B. Depoprovera, C. diaphragm, D. Oral contraceptive pills
C: diaphragm
Answer: C: diaphragm 
Explanation: A diaphragm is a circular spring covered with latex rubber and was the first effective contraception under a women&;s control. It is a barrier method which prevents the union of sperm and ovum, which is necessary for pregnancy. This this doesnot have any systemic effects. TEXTBOOK OF GYNECOLOGY SHEILA BALAKRISHNAN SECOND EDITION PAGE NO 383, 384