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:
No phone is mobile.
Some mobiles are telephones.

Conclusions:
I. All phones being telephones is a possibility.
II. Some telephones are not mobiles.

Conclusions: I. All phones being telephones is a possibility.

The given possibility will be true. It is given below in the diagram. So the given conclusion follows.

Conclusions: II. Some telephones are not mobiles.

From the given statement, we can say that 'Some telephones are mobiles.'. But we cannot say about the negative relationship between them. So the given conclusion does not follow.

Hence Only conclusion I follow.