To obtain a list of all the functions defined under sys module, which of the following functions can be used?

A. A file containing Python code that can be reused B. A keyword in Python C. A built-in data type D. A type of exception

A. By importing it using the import statement B. By defining it with the module keyword C. By including it as a string D. By using the use_module function

A. It allows you to use functions and objects defined in a module B. It creates a new module C. It imports a module from another programming language D. It is used to define a new class

A. It renames the imported module or object B. It imports a module as a string C. It imports all modules in the current directory D. It creates an alias for the import keyword