What is 'D' in the following reaction ?
`C_(2)H_(5) - NO_(2) overset(LiAIH_(4)) to A overset(C_(2)H_(5)Br)to B overset(C_(2)H_(5)Br) to C overset(H_(2)SO_(4)) to D`

Options

A. `[(C_(2)H_(5))_(3) NH]_(2)^(+) SO_(4)^(2)`
B. `[(C_(2)H_(5))_(3)NH]_(3)^(+) SO_(4)^(2)`
C. `(C_(2)H_(5))_(3) NH^(+) SO_(4)^(2-)`
D. `(C_(2)H_(5))_(3)N^(+) OH^(-)`

Answer

A

Explanation

`C_(2)H - NO_(2) overset(LiAlH)to C_(2)H_(5) - NH_(2) underset(-HBr)overset(C_(2)H_(5)Br)to`
`(C_(2)H_(5)) - NH underset(-HBr)overset(C_(2)H_(5)Br)to (C_(2)H_(5))_(3)N overset(H_(2)SO_(4))to [(C_(2)H_(5))_(3)NH]_(2)^(+) SO_(4)^(2-)`