The major product of the following reaction is:
$$CH_3CH_2CH = CH_2 \xrightarrow[ Rh \text{ catalyst}]{H_2/CO}$$

A

$$CH_3CH_2CH = CH - CHO$$

B

$$CH_3CH_2CH_2CH_2CHO$$

C

$$CH_3CH_2CH_2CHO$$

D