Match the minerals and the concerning districts:

a. Manganese	1. Balaghat
b. Iron ore	2. Bastar
c. Bauxite	3. Mandla
d. Coal	4. Shahdol

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

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

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

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

Answer: Option A