Match the following:
| Compound | Reaction Type |
| A. CH2=CH2 | I. Electrophilic substitution reaction |
| B. CH3COOCH3 | II. Nucleophilic substitution reaction |
| C. C6H6 | III. Electrophilic addition reaction |
| D. CH3Cl | IV. Nucleophilic addition reaction |
Consider the following sequence of reactions : 
Molar mass of the product formed (A) is ______ g mol\(^{-1}\).
Predict the major product $ P $ in the following sequence of reactions:
(i) HBr, benzoyl peroxide
(ii) KCN
(iii) Na(Hg), $C_{2}H_{5}OH$