The correct option is
C Both a and b
Let us inspect option A
Above products on oxidation yield
O O O O || || || || CH3−C−HO,CH3−C−C−OH,CH3−C−CH3 (unaffected) Let us also investigate (b)
C(CH3)2 || CH3−C−CH=CH−CH3 Above products on oxidation yield,
O O O O || || || || CH3−C−CH3 (unaffected), CH3−C−C−OH and CH3−C−OH So, both options (a) and (b) are correct.