Match the items of the following two lists and indicate the correct answer.

List-I	List-II
a. Trade channel discounts	1. Oligopoly pricing
b. Tie-up sales	2. Locational price differential
c. Price being non-responsive to changes in demand costs	3. Differential pricing
d. Basing-point pricing	4. Product-line pricing

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

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

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

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

Answer: Option B