The correct options are
C CH3CH2CH=CH−CH3
D (CH3)CH=CH2
As option A & B are symmetrical so it will make same product and there is no use of markovnikov's rule.
But in case of C & D,
Alkenes are unsymmetrical so it will make different product when it reacts with HBr in presence of peroxide according to anti-markovnikov's rule.