Haloalkanes and Haloarenes Part 2

(A)→ Because formed intermediate carbocation formed by Br(a) get stabilised by conjugation with phenyl
(B) → Because the intermediate carbocation formed by I(a) become more stable by conjugation
(C) → Becouse, we con't remove Br(a) from bridge head carbon (Bredt's rule)
(D) → Becouse, formed intermediate by Br(a),3∘ carbocation is more stable (stability of carbocation 3∘>2∘>1∘ )