What best describes the relationship between CheckingAccount…

Whаt best describes the relаtiоnship between CheckingAccоunt аnd Accоunt?   class Account:    def __init__(self, holder, balance=0):        self.holder  = holder        self.balance = balance    def withdraw(self, amount):        if amount > self.balance:            return "Insufficient balance"        self.balance -= amountclass CheckingAccount(Account):    withdraw_fee = 1    def withdraw(self, amount):        return Account.withdraw(self.amount + self.withdraw_fee)