Three 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 dates are weeks.

Some weeks are months.

All months are years.

Conclusions:

I. No date is a month.

II. All weeks being years is a possibility.

III. All years can never be dates.