Among the four dynasties listed below which ones minted coins made of lead?

Among the four dynasties listed below which ones minted coins made of lead?
1. Mauryas
2. Satavahanas
3. Western Kshatrapas
4. Guptas

(A) 1, 2
(B) 1, 2, 4
(C) 2, 3, 4
(D) 3, 4

Ans. (C)