How do you define your own custom module named "my_mod" with 3 functions: func1(), func2(, and func30)? Select one: O a. Create a single Python file called "my_mod.module" and define all three functions inside O b. Create three files called my_mod.func1.py, my_mod.func2.py, and my_mod.func3.py c. Create a file with all function definitions (file name doesn't matter), but start the file with "def my_mod:" O d. None of the other answers are correct