About sea water, which of the following statement or statements is or are correct?
I. Frozen sea water melts at a lower temperature than pure ice.
II. Boiling point of sea water increases as it evaporates.
III. Sea water boils at a lower temperature than fresh water.
IV. Density of sea water at STP is same as that of fresh water.

A

I only

B

I and II

C

I, II and III

D

III only