A bank wants to have a program to open new accounts. Each new account must have a name and an optional starting balance. If no starting balance is provided, it is set to 0 automtaically. Which of the following __init__ method of the Account class can do that?
A. def __init__(self, account_name):
self. account_name = account_name
self. balance = 0
B. def __init__(self, account_name, balance):
self. account_name = account_name
self. balance = balance
C. def __init__(self, account_name, balance = 0):
self. account_name = account_name
D. def __init__(self, account_name, balance = 0):
self. account_name = account_name
self. balance = balance