Write a program that determines a student$$s grade. The program will accept three user inputted types of

scores $($quizzes$,$ midterm, and final exam$)$ and determine the grade based on the following rules:

$$ If the average score $=90\%$ to $100\%$: grade $=$ A

$$ If the average score $>=80\%$ and $<90\%$: grade $=$ B t

$$ If the average score $>=70\%$ and $<80\%$: grade $=$ C

$$ If the average score $>=60\%$ and $<70\%$: grade $=$ D

$$ If the average score $<60\%$: grade $=$ F