Which best explains why this triangle is or is not a right triangle?

A triangle has side lengths 60 inches, 144 inches, 156 inches.
This triangle is not a right triangle: 156 squared + 60 squared not-equals 144 squared.
This triangle is not a right triangle: 156 squared + 144 squared not-equals 60 squared.
This triangle is a right triangle: 60 squared + 156 squared = 144 squared.
This triangle is a right triangle: 60 squared + 144 squared = 156 squared.