Which of the following are cumulative dienes?

Options

A. `CH_3 - CH = C = CH-CH_2`
B. `CH_2 = CH - CH = CH_2`
C. `CH_2 = CH - CH_2CH = CH_2`
D. `CH_3CH_2CH= C=CH-CH_3`

Answer

C

Explanation

In cumulative dienes, there is at least one carbon atom joined to both the neighbouring carbon atoms by double bonds, i.e., they contain the group