Which of the following statement(s) about latent heat for a given substance is/are correct?
1. It is fixed at a given temperature.
2. It depends upon the temperature and volume.
3. It is independent of temperature and volume.
4. It depends on the temperature but independent of volume.

A. Only 2

B. 1 and 3

C. Only 4

D. 1 and 4

Answer: Option B