Explanation

Given the statements:

1. All schools are chalks.

2. All chalks are chairs.

(i) All chairs are school:

This statement cannot be concluded from the given information.

We know that all chalks are chairs, but we don't have enough information to conclude that all chairs are schools.

(ii) All school are chairs: According to the statements provided:

"All schools are chalks" (A = B)

"All chalks are chairs" (B = C)

Therefore, by transitivity, we can conclude that "All schools are chairs" (A = C).

So, the correct expression is:

Only 2: All school are chairs