True about cardiolipin is all except
(A) Found in inner mitochondrial membrane (B) Play role in process of apoptosis (C) Is Diphosphatidyl glycerol (D) Has choline base which has labile methyl group
(D) Cardiolipin (diphosphatidylglycerol) is a phospholipid present in mitochondria.  
It is formed from phosphatidylglycerol, which in turn is synthesized from CDP-diacylglycerol and glycerol 3-phosphate.
Cardiolipin, found in the inner membrane of mitochondria, has a key role in mitochondrial structure and function and is also thought to be involved in programmed cell death (apoptosis).
Cephalin: Has choline base which has labile methyl group.
 
Harper's Illustrated Biochemistry 30th edition page no 248