Economists Gary Becker and Kevin Murphy Are Associated with Which

Multiple Choice

Economists Gary Becker and Kevin Murphy are associated with which of the following?

A) The discovery of the first example of a Giffen good
B) They have argued that social factors are not important in explaining the choices consumers make.
C) Consumers appear to receive utility from consuming goods they believe are popular.
D) They discovered that price changes have both income and substitution effects.