Algebra-1

The true statement is C: All integers are rational numbers. An integer can be written as a fraction where the denominator is 1. For example, the integer 5 can be written as 5/1.

Option A: π is a rational number.

This statement is false. π is not a rational number; it is an irrational number. Irrational numbers cannot be expressed as a fraction of two integers and have non-repeating, non-terminating decimal expansions.