Which of the following will react faster through SN 1 mechanism?

SN1 reaction proceeds through carbocation intermediate.    stability of  CH2=CH−C+H is maximumC+H2−CH=C H2   ↔    CH2=CH−C+H2CH2 = CH – Cl  and C6H5Cl are least reactive as C – Cl bond acquires double bond character due to resonance. C H3−CH2−C l   forms C H3−C+H2  which stabilizes through Hyperconjugation and +I effect. stability of  CH3C+H2  <  CH2 =  CH−C+H2