in a UML class diagram

- A basic bank account allows the account holder to make deposits to and withdrawals from the account.

a. Create a class for the bank account (call the class BankAccount). Specify necessary attributes and methods for the BankAccount class, but no more than five for each. (Hint: You may define a type, such as AccountHolder, where primitive types are not appropriate.) Bank systems, such as a website or ATM, may access the BankAccount class, but they are not part of the BankAccount class.

b. Specify at least two pre-conditions for the methods of the bank account class. Include these conditions in the Astah UML class diagram, and include screenshots of these pre-conditions.

c. Provide and explain two reasons that encapsulation is important for the BankAccount class.