Write a python code to solve:

Design and write a Python program that will from Keyboard read four inputs, named test1, test2, test3, and final. The application will then determine the best 2 (Btest1, and Btest2) out of the 3 grades of tests 1, 2 and 3. Then, it will compute the final average and the letter grade.

Use the following grading policy:

BTest1: 30% BTest2: 30% Final: 40%

And then display the corresponding letter-grade based on the following scheme:

90-100: A 80-89: B 70-79: C 60-69: D 59 and below: F

Define and use functions in your implementation.

The following shows a sample run. Your application should be able to generate a similar output:

Grade Computing Application By yourname Enter Testi: 80 Enter Test2: 79 Enter Test 3: 94 Enter Final: 88 Computed Average: 87.4 Computer Letter Grade: 'B' Thank you