[单选题]
On a plot of Force ve0akowg yj-/ u2rsu k g21 y-+vbogst2hwof(o/k+hs position (F vs. x), what represents the work done by the force Fs(21 2+fgkbt y ovhokhw+- o/g?
A. the slope of the curve
B. the length of the curve
C. the area under the curve
D. the product of the maximum force times the maximum x
