GIVING BRAINLIEST! HELP ASAP!!

What is the perimeter of this rectangle?

A) 2(x^2-x^1)+2(y^2-y^1)

B) (x^2-x^1)(y^2-y^1)

C) radical: 2(y^2-y^1)(x^2-x^1)

D) 4 radical: (y^2-y^1)^2(x^2-x^1)^2

E) 4(y^2-x^1)(x^2-y^1)