Match the following

List-I (External Causes for Sickness)	List-II (Features)
a. Personal constraints	1. Fear of nationalisation
b. Marketing constraints	2. Import-export restrictions
c. Production constraints	3. Non-availability of skilled labour
d. Finance constraints	4. Restrain of purchase by bulk purchasers

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

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

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

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

Answer: Option A