A lift of weight W is lifted by a rope with an acceleration f. If the area of cross-section of the rope is A, the stress in the rope is

A

$$\frac{W \left(1 + \frac{f}{g}\right)}{A}$$

B

$$\frac{\left(1 - \frac{g}{f}\right)}{A}$$

C

$$\frac{W\left(2 + \frac{f}{g}\right)}{A}$$

D

$$\frac{W\left(2 + \frac{g}{f}\right)}{A}$$