SSC CGL Model Paper 13

Two statements are given followed by three conclusions numbered I, II and III. Assuming the statements to be true even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
Some ice is snow
Some snow is vapour
Conclusions:
I. No ice is vapour
II. All snow is vapour
III. Some vapour is ice.