Bank Account Use Case Diagram Open Account Amount over 10,000 or Age over 55 Bank Employee Deposit Funds > Calculate Bonus Customer > Withdraw Funds - >--> Update Balance Convert Currency NRFC Customer How many roles are in the Use Case Diagram? O Cannot be determined 3 0 1 6 Bank Account Use Case Diagram Open Account Amount over 10,000 or Age over 55 Bank Employee Deposit Funds - > Calculate Bonus Customer > Withdraw Funds >---> Update Balance Convert Currency NRFC Customer How many internal roles are in the diagram? Cannot be determined O 3 O 1 Bank Account Use Case Diagram Open Account Amount over 10,000 or Age over 55 Bank Employee Deposit Funds > Calculate Bonus Customer > Withdraw Funds >--> Update Balance Convert Currency NRFC Customer How many external roles are in the diagram? 6 0 1 O Cannot be determined 03