Match the following.

List-I	List-II
a. Kreitner and Kinicki (1995)	1. Distinctive clarifications between formal and informal channels
b. P. G. Clampitt and Downs (1993)	2. Message is central part of communication
c. Shelby (1998)	3. Demonstrate a close link between effective communication and productivity
d. Johnson et. al (1994)	4. Exchange of information between a sender and a receiver

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

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

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

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

Answer: Option D