The area of the square shown is 5 m^2. Which of the following describes 4s, the perimeter of the square in meters?
a. It is a rational number, since s irrational, and 4 times an irrational number is rational
b. It is a rational number, since s irrational, and 4 times an irrational number is irrational
c. It is a irrational number, since s irrational, and 4 times a rational number is irrational
d. It is a rational number, since s rational, and 4 times a rational number is rational