Which of the Following Correctly Highlights the Implications of Heider's

Which of the following correctly highlights the implications of Heider's (1958) balance theory to marketers?

A) To change attitude, marketers need to encourage consumers to think about the key features of their products
B) To change attitudes, marketers need to measure consumer attitudes towards brands
C) To change attitudes, marketers should use principles of instrumental learning
D) To change a negative attitude, marketers should consider getting endorsement from a celebrity as who is really liked by consumers