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:

1. All squares are rectangles.

2. All rectangles are polygons.

Conclusions:

I. Square is not a polygon.

II. Square is both rectangle and polygon.

Only conclusion II follows.