The graph below shows the force exerted by a rope in lifting a $2\mathrm{.}0kg$ mass a vertical distance of $10m$ from the ground.

What is the final speed of the box at $10m?$

A$.7\mathrm{.}3\frac{m}{s}$

B$.10\frac{m}{s}$

C$.16\frac{m}{s}$

D$.21\frac{m}{s}$