Match the following.

List-I	List-II
a. Advantage of mass media in campaigns	1. Inconvenient backups
b. Failure of campaigns	2. To reach mass audience effectively
c. Use of mass media campaigns	3. Both advantageous and disadvantageous
d. Campaign revelations	4. Examined on the basis of recall

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

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

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

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

Answer: Option B