"Planned Obsolescence" Was a Marketing Tool Invented in the Postwar

"Planned obsolescence" was a marketing tool invented in the postwar era that

A) pushed families to buy a second car, rather than owning just one.
B) encouraged manufacturers to make products that would break or wear out every two years.
C) meant changing the design of goods frequently enough so that customers would replace older versions with newer ones.
D) was the reason more and more mothers entered or re-entered the workforce.
E) barraged consumers with repetitive advertising campaigns designed to make them purchase more.