The products (A) and (B) are respectively.
(i) `CH_3-underset(Br)underset(|)(CH)-underset(CH_3)underset(|)(CH)-CH_3overset(C_2H_5ONa)to(A)`
(ii) `CH_2=overset(CH_3)overset(|)(C)-CH_2CH_3underset("Peroxide")overset(HBr)to(B)`
A. `CH_3-underset(Br)underset(|)CH-underset(CH_3)underset(|)CH-CH_3overset(C_2H_5ONa)rarr(A)`
B. `CH_2=overset(CH_3)overset(|)C-CH_2CH_3overset(Hbr)underset("Peroxide")rarr(B)`
C. `CH_3CH_2-overset(CH_3)overset(|)"CH"-CH_3,CH_3(CH_2)_2CH_3`
D. `CH_3CH_2-underset(OC_2H_5)underset(|)C(CH_3),underset(Br)underset(|)CH_2-underset(CH_3)underset(|)"CH"-CH_2-CH_2`