A man has fallen into a ditch of width d and two of his friends are slowly pulling him out using a light rope and two fixed pulleys as shown in the figure. What is the force (assumed equal for both the friends) exerted by each friends on the slope?

• A. \[\frac{mg}{4h}\sqrt{{{d}^{2}}+4{{h}^{2}}}\]
• B. \[\frac{mg}{4h}\times d\]
• C. \[\frac{mg}{4h}\times \sqrt{{{d}^{2}}+4{{h}^{2}}}\]
• D. \[\frac{mgh}{d}\]