How can he fix this?

Felix is creating a new guided selling experience, and he notices that theTotal Summary in his persistent cart always displays “0 item in Cart” and the one time and monthly total are blank, despite having several items in the cart .

How can he fix this?
A . Add “vlcCart_Top” as the Response JSON Node in the remote action that invokes the getCarts method
B . Add a remote action that invokes the checkout method
C . Select the Render property for the remote action that invokes the postCartsItems method
D . Activate the PricingElementServiceImplementation for the PricingPlanService interface

Answer: C