For loops and Matrix Multiplication 4) Write a Python function that takes a matrix A, and a scalar c, and returns the number of elements in A that have the value c. Do this using a nested for loop, i.e. explicitly looping over all of the elements in the matrix A, comparing them to c, and then incrementing a counter variable Test your code by choosing your own matrix A, a value c that A contains at least once, and show the results of calling your code with these inputs