The Graph Shows the Force on an Object as It $x$

The graph shows the force on an object as it moves a distance $x$ . What is the work done by the force as the object moves from $2.0 \mathrm{~m}$ to $8.0 \mathrm{~m}$ ?

A) $52 \mathrm{~J}$
B) $50 \mathrm{~J}$
C) $35 \mathrm{~J}$
D) $60 \mathrm{~J}$
E) $48 \mathrm{~J}$