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 bolts are pens.
Some stencils are bolts.
All screws are bolts.

Conclusions:
I. No screw is a stencil.
II. Some pens are stencils.