question_answer

Which of the following statements is correct?

(i) Air is all around us but we can't see it.

(ii) Water vapour is not the part of air.

(iii) Air is of no use on the mountains.

A) Only (i)

B) Only (ii)

C) All (i), (ii), (iii)

D) (i) and (ii)

E) None of these