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.

Statement :

Some pins are wood

Some thread are wood

All wood are nest

All nest are helmet

Conclusion:

I.  Some pins are helmet

II.  Some thread are nest

III.  Some pins are thread

IV.  No pins are thread

Only I, II and either III or IV follow

Con - I  √

       II  √

      III  ⇒

      IV  ⇒  either III or IV follows