How to access values returned from inquirer

[cspower]

1. I'm using the code below and it works well.
I'm able to select my choices but I can't figure out how to access the choices so I can use the information.
I've tried to run pprint(m_g) but it gives me the error "object is not callable"
if I try to print it with an attribute such as m_g.result it tells me it has no attributes.

def get_m_g(_):
    return [
        "L",
        "G",
        "B",
        "C",
        "S",
        "B",
        "T",
        "Co",
        "Car",
    ]

def main():
    m_g = inquirer.checkbox(
        message="\nChoose the m g:",
        choices=get_m_g,
        validate=lambda result: len(result) > 0 and len(result) <= 2, 
        invalid_message="should be at least 1 m g and no more then 2",
        instruction="(\nselect up to 2 m g)",
    ).execute()

2. can someone explain what is going on here.

if __name__ == "__main__":
      main()