Two young mathematicians look at graph of a function, its first derivative, and its second derivative.

Check out this dialogue between two calculus students (based on a true story):
Devyn
Riley, check out this plot:
Riley
Whoa, that looks cool!
Devyn
I know! Anyway, someone told me that this was a graph of a function, its derivative, and the derivative of the derivative. Which one is which?
Riley
Hmmmmm. I’m not sure.
Which of the following is true?
Curve is increasing when curve is positive. Curve is increasing when curve is positive. None of the above.
Which of the following is true?
Curve is increasing when curve is positive. Curve is increasing when curve is positive. None of the above.
Which of the following is true?
Curve is increasing when curve is positive. Curve is increasing when curve is positive. None of the above.