Inflation rates during the years 1979-1981 were the highest the United States has ever experienced during peacetime

Private savings and thus investment could be increased by which of the following government policies, ceteris paribus?

A) elimination of the corporate income tax B) allowing corporations to use "replacement cost accounting" C) exemption of interest earnings from income taxation D) all of the above.

Jaime's father gives her a pen for her graduation from college, but Jaime wants a smartphone. This implies that

A) Jaime's father is not acting out of self-interest because he knows that she really wants a smartphone. B) Jaime's father is acting out of self-interest because he wants to give her something useful. C) Jaime is not acting out of her self-interest by wanting something different from what her father gives her. D) Jaime is not rational by asking for a smartphone instead of a pen.