Match the items of List-I with those of List-II and indicate the correct canswer:

List-I	List-II
a. Postage stamp pricing	1. Equality of marginal and average cost
b. Loss leader	2. Constant average and marginal cost
c. Economic capacity	3. Product line pricing
d. Reserve capacity	4. Differential pricing

A. a-3. b-4, c-2, d-1

B. a-4, b-3, c-1, d-2

C. a-2, b-1, c-3, d-4

D. a-1, b-2, c-4, d-3

Answer: Option B