Match the following.

List-I (Components)	List-II (Requirements)
a. Maganese	1. 50-20 μg/day
b. Copper	2. 400 g/day
c. Anti-oxidants	3. 2-5 mg/day
d. Chromium	4. 2 mg/day

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

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

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

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

Answer: Option B