Integral of a derivate of F(x)? I am having trouble solving this lab question:
If the function G(x) is the derivative of the function F(x), then the integral of G(x) is equal to which of the following?
A. Some number plus the derivative of the square of F(x)
B. Some number plus G(x)
C. Some number plus G(x) multiplied by F(x)
D. Some number plus G(x) divided by F(x)
I think the answer is C or D but I have no way of knowing if I am right. 
I tried this problem with a sample equation $F(x)= x^2$ and $G(x)$ would be $2x$.
Taking the integral of $G(x)$ gets you $C + x^2$ but none of the answer choices seem to match up. Any help is appreciated

None of those are right, as the comments are mentioning (I also have no idea what was intended).
If $G(x)=F'(x)$, then we can integrate both sides using the FTC
$$
\int G(x)=\int F'(x)=F(x)+c
$$
