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:
Some locks are keys.
No key is a chain.
All springs are chains.

Conclusions:
I. Some keys are springs.
II. No key is a spring.
III. No lock is a spring.