Prep Problem - 22

In this problem, you should write one function named count_vowels. This function should have three parameters. The first is a string of text, the second and third should be integers, which I will refer to as A and B. The function should count how many vowels (a, e, i, o, u) exist in the first parameter, between the indexes A and B (inclusive on both ends). The function should return this count. Shown below are a few examples:

Make sure to include only the one function in your file. The gradescope tests will call the functions to test them. Name the program prep22.py. Make sure that gradescope gives you the points for passing the test case.