Using complete sentences, explain the difference between an exponential function and a geometric series.

The main difference between an exponential function and a geometric series is that you can plug in non-integer inputs into an exponential function, which is something you cannot do with a geometric series. So, when it comes to an exponential function, you can plug in any real number, whereas you can only plug in positive integers into a geometric series. 

Ithink the answer is b

For being nice i appreciate it but abc