Match the following.

List-I	List-II
a. Fixed costs	1. Fall at first and then rise as the firm approaches full capacity
b. Variable costs	2. Continue to fall at rate proportionate with the increase in output
c. Total costs	3. Are those costs which do not increase as output increases
d. Average total costs	4. Are the amount paid to all the factors employed in producing the output
e. Average fixed costs	5. Are those costs which increase as output increase