public MortgageAccount(Customer customer, decimal balance, decimal interestRate) : base(customer, balance, interestRate) { }
public DepositAccount(Customer customer, decimal balance, decimal interestRate) : base(customer, balance, interestRate) { }
protected Account(Customer customer, decimal balance, decimal interestRate) { this.Customer = customer; this.Balance = balance; this.InterestRate = interestRate; }