A Class Diagram has been provided for below. Answer the following questions based on the given diagram. Bank -Bankid:int Name: string Location: string Teller Id: int Name: string CollectMoneyo OpenAccount Close Account LoanRequest Provideinfo IssueCardo Checking Id:int Customerld: int Customer Id: int Name: string Address: string Phone No: int Acc No: int Account Id: int Customerld: int Savings Generalinquiry DepositMoney - WithdrawMoneyo OpenAccount Close Account ApplyForLoan RequestCardo -Id: int Customerld: int Loan Id: int Type: string Accountld: int Customerld: int Questions: (5 marks) a. Provide a list of all classes used in this class diagram. b. Explain the relationship between Account and Checking class. C. Explain the relationship between Customer and Loan class. d. Provide the details for the association class in this class diagram where appropriate