Answer:
C
Step-by-step explanation:
The answer is not D because the money is doubling every n years. We do not need to know what n equals to know that since n is doubling, this is an exponential function. The graph in D is going at a constant rate, and exponential functions do not increase/decrease at a constant rate. This also eliminates A. B is not correct because the money will keep increasing and not decrease eventually like the graph in B shows.