Consider the following statements:
I. Sulphur is the oldest fungicide used in plant disease control.
II. Sulphur is a contact and protective fungicide effective against powdery mildews and rusts.

Correct option is B

Sulphur has been used since ancient times as fungicide. It is one of the oldest plant protection chemicals. Sulphur acts as contact and protective fungicide. It is effective against powdery mildew and rust diseases. It does not have systemic action.
Therefore, both statements are correct.