20. Which of the following statements is true?

a	If the interest rate exceeds the expected rate of return, the investment should be made.
b	The investment demand curve shows an inverse relationship between the interest rate and the amount of investment.
c	As long as the expected return exceeds the interest rate, the investment is expected to be profitable.
d	All of the above.
e	Only b) and c)

19. Which of the following statements is true?

a	Expectations about future economic and political conditions, both in the aggregate and in certain specific markets, can change the view of expected profits.
b	(Gross Private) Investment (Ig) is very volatile.
c	Investment is less volatile than real GDP.
d	All of the above.
e	Only a) and b)

18. Which of the following statements is true?

a	The investment demand curve shifts when any of its determinants (different from the interest rate) changes.
b	Greater expected returns create less investment demand, shifting the investment curve to the left.
c	Changes in expected returns happen for reasons such as changes in business taxes, technological progress, and expectations.
d	All of the above.
e	Only a) and c)