The correct options are
B Rate if SN1 reaction of (II)>(I)
D Rate if SN2 reaction of (II)>(I)
Allyl chloride is much more reactive than n−PrCl, although it is 1o RX, due to resonance stabilisation.
[H2C=CH−⊕CH2↔H2⊕C−CH=CH2]
(stablilised by extended π-bonding)
Allyl chloride is reactive by both SN1 and SN2 mechanism, but more reactive by SN1 mechanism