Which one of the following is most reactive towards SN1 reaction?

The intermediate in SN1 reactions is a carbocation at para position-NO2  .  .  .  EWG-OCH3 .  .  .  EDG-CH3 .  .  .  EDG-Cl attached to benzene ring is always EWG Electron withdrawing power of -NO2 > -ClElectron donating power of -OCH3 > -CH3EWG destabilize the intermediate carbocationEDG stabilize the intermediate carbocationReactivity towards SN1 reactions is: 2>3>4>1