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Consider the following reactions. Form these reactions which reaction will give carboxylic acid as a major product? (A) R – C ≡ N condition mild O H / H ) i ( 2 ⎯ ⎯ ⎯ ⎯ → ⎯ + (B) R – MgX + ⎯ ⎯ ⎯ → ⎯ O H ) ii ( CO ) i ( 3 2 (C) R – C ≡ N + ⎯ ⎯ ⎯ ⎯ → ⎯ O H ) ii ( HCl . SnCl ) i ( 3 2 (D) R·CH 2 ·OH ⎯ ⎯ → ⎯ PCC (E) water Br ) ii ( BaSO Pd | H ) i ( 2 4 2 ⎯ ⎯ ⎯ ⎯ ⎯ → ⎯ − ` Choose the correct answer from the options given below:

1. B and E only
2. B, C and E only
3. A and D only
4. A, B and E only

Correct answer: B and E only

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