Propane cannot be prepared from which reaction?
A
$$CH_3 - CH = CH_2 \xrightarrow[OH^-]{B_2H_6}$$
C
$$CH_3CH_2CH_2I \xrightarrow[P]{HI}$$
D
$$CH_3CH_2CH_2I \xrightarrow[]{Zn,\ dil . HCl+H_2}$$
Correct option is A. $$CH_3 - CH = CH_2 \xrightarrow[OH^-]{B_2H_6}$$
Hydroboration of alkanes followed by hydrolysis in basic medium yield alcohols and not the alkanes.
$$R - CH = CH_2 \xrightarrow[]{B_2H_6} (R - CH_2 - CH_2)_3 - B \xrightarrow[]{OH^-} R - CH_2 - CH_2OH$$