Firms such as General Electric $($GE$),$ Johnson & Johnson, Coca$-$Cola, and British Airways focus their attention on $q,$ to maximize customer satisfaction and retention in part by offering training to handle complaints, answer questions, and solve consumer problems.

A$)$ comparison pricing

B$)$ postpurchase behavior

C$)$ value perception

D$)$ non$-$competitive pricing

E$)$ prepurchase behavior