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 dolls are rockets.
Some rockets are engines.
All engines are solids.
Conclusions:
I. No doll is solid.
II. No solid is an engine.
III. Some dolls are solid.
IV. No engine is a rocket.
1
Only conclusions II and IV follow.
2
Either conclusion II or III follows.
3
Only conclusions I and III follow.
4
Either conclusion I or III follows.