Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

Statements:
I. Some trolley-bags are backpacks.
II. Some backpacks are suitcases.
III. All suitcases are bags.

Conclusions:
I. At least some backpacks are bags.
II. some bags are suitcases.