Match the following.

List-I	List-II
a. Plague	1. Affect the intestines
b. Filaria	2. Spreads through flea-bites
c. Beri-beri	3. Caused by mosquitoes
d. Typhoid	4. Due to Vitamin 'B' deficiency

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

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

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

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

Answer: Option D