Python Only

1. This question practices the use of a list method. Assign to the variable grades a list of 10 letter grades from among 'A', 'B', 'C', 'D', and 'F'. For example: grades = ['A', 'F', 'C', 'F', 'A', 'B', 'A', 'C', 'A', 'B'] Write a Python expression that creates a list named frequency, in which the elements are the number of times each of the letters A, B, C, D and F appear in grades. For example, for the above value of grades, the following would be correct output: frequency = 14,2,2,0,2) Your expression must give the correct values for any list of grades, not just the one in your list. Hint: use the list method count. This question practices list membership, list indexes and list slices. 2