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Identify C in the following reaction C...

Identify C in the following reaction
`C_(2)H_(2) overset("Chromic acid")toA overset(NH_(3))toB overset(Delta)underset(-H_(2)O)to C`

A

`CH_(3)CH_(2)NH_(2)`

B

`CH_(3)CN`

C

`CH_(3)CH_(2)NHCH_(3)`

D

`CH_(3)-overset(O)overset(||)(C)-NH_(2)`

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