Under which of the following condition(s) a writ of mandamus can be granted? Give correct answer:
1. There must be a public duty.
2. There must be a specific demand and refusal.
3. There must be a clear right to enforce the duty.
4. The right must be subsisting on the date of the petition.

A. All 1, 2, 3 and 4 are correct

B. Only 1, 2 and 3 are correct

C. Only 1 and 3 are correct

D. Only 1 and 2 are correct

Answer: Option A