Which of the following is true about the expression below?

9 * 1/4

O It represents the product of two rational numbers and is equivalent to a rational number.
O It represents the product of two rational numbers and is equivalent to an irrational number
O It represents the product of a rational and an irrational number and is equivalent to a rational number
O It represents the product of a rational and an irrational number and is equivalent to an irrational number​