<prompt> True about is are :MS surgery better avoided in pregnancyMR with PHT-definite indication for termination of pregnancyAoic stenosis in young age is due to Bicuspid valveAll  <response>: Ans. a, b and c i.e. MS surgery better avoided in pregnancy; MR with PHT- definite indication for termination of pregnancy; and Aoic stenosis in young age is due to Bicuspid valve 