Hi I need help with this problem.

Chevrolet is entering the electric vehicles market with a massive investment in the sector. Knowing that word-of-mouth is very powerful, they want to leave their EV customers extremely satisfied so that their friends and family will be more likely to consider an EV Chevrolet over a Tesla. This wilt involve an investment in leaving their customers feeling positive about their new EV Cherys during the post purchase evaluation stage. Marketers can attempt to shape the outcome of the post purchase evaluation by: a. helping consumen to identify potential problems or needs. b. offering personal assistance with any problem experienced with the product C. attempting to convince consumers that a competing brand does not meet their criteria. d. trying to get consumers to expend their evoked sets to include their product