Why is it discouraged to import * from a module? Select all correct answers. Select one or more:

a. It can cause many function and variable definitions to be imported into your namespace, even if you won't be using them.

b. You could import a redundant function definition which could redefine one of your functions by accident

c. There is no problem with "import *"

d. It can load many function definitions into memory, even if you won't use them all.