Match correctly the insect vector in List I with the disease transmitted by them given in List II.

List-I	List-II
a. Anopheles (female)	1. Kala-azar
b. Culex	2. Sleeping sickness
c. Sand fly	3. Filariasis
d. Tse-tse fly	4. Malaria

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

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

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

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

Answer: Option D