In this question, a statement is given followed by four conclusions. Choose the conclusion(s) which best fit(s) logically.

Statement:
In the university examination, most of the candidates take exam in Hindi medium.
Conclusions:
I. Some candidates take exam in Hindi.
II. Most of the candidates appeared for the examination are from Hindi medium.
III. In this examination no candidate writes answers in medium other than Hindi.
IV. All the candidates who appear in this examination write answers in Hindi.