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What are the products 'A' and 'B' in the...

What are the products 'A' and 'B' in the following sequence reactions :
1. `CH_(3)-CH_(2)-COOH underset(Br_(2))overset("Red 'P'")rarr A` 2. `A underset(H^(+))overset("alc.KOH")rarr B`

A

`CH_(3)-CHCOBr, CH_(2)=CH-COOH`

B

`CH_(3)-underset(Br)underset(|)overset(Br)overset(|)(C)-COOH, CH_(2)=CHCOO`

C

`CH_(3)-underset(Br)underset(|)(CH)-COOH, CH_(2)=CHCOOH`

D

`underset(Br)underset(|)(CH_(2))-CH_(2)COOH, CH_(2)=CH-COOH`

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