For items $13,$ use these grade ranges:

An A grade is between $90$ and $100.$

A B grade is between $80$ and $89.$

A C grade is between $70$ and $79.$

A D grade is between $60$ and $69.$

All other scores are an F grade.

Write a program in R that prompts the user for a score between $0$ and $100.$ Test the entered value using IF$/$ELSE IF$/$ELSE statements using the scoring range given below. Print the grade based on input. Be sure to show code and result.