Which of the following is a leakage?

Another way to describe the growth rate of spending is:

A. the growth rate of real GDP. B. the growth rate of nominal GDP. C. the growth rate of the velocity of money. D. the growth rate of the money supply.

Assume that a consumer can spend $20 on two goods–pens and pencils. If the price of one pen is $5 and the price of one pencil is $2, which of the following combinations of the two goods represents a point on the consumers budget constraint?

A) 3 pens and 2 pencils B) 1 pen and 10 pencils C) 2 pens and 5 pencils D) 2 pens and 3 pencils