An apartment complex is trying to retain as many tenants as possible by giving each tenant a $50 discount on the rent of the first month into a renewed contract. The manager of the complex is also offering 50% off of the first month’s rent. Which of the following expressions represents the amount of the first month’s rent when the $50 discount is used before the 50% off is applied?

A. (x - 50) - 0.5
B. 0.5x - 50
C. 0.5(x - 50)
D. x(0.5x -50)