Test time left: 10:51Problem SolvingWhat will be the output of the following program?def a(b): b = b + [5]c = [1, 2, 3, 4]a(c)print(len(c))Options4532

The output of the program will be 4.

Here's the step by step explanation:

1. The function a(b) is defined to take a list b and append the number 5 to it.
2. The list c is defined with four elements: 1, 2, 3, 4.
3. The function a(c) is called with c as the argument. Inside the function, the number 5 is appended to the list b, which is a local copy of c. However, this does not affect the original list c because lists are passed by value, not by reference in Python.
4. The len(c) function is called, which returns the number of elements in the original list c. Since the original list c has not been modified, it still contains four elements, so the output of the program is 4.