You create Microsoft Windows-based applications. You are reviewing code for an application that is created for a bank. You find that a Microsoft Windows Form includes the following code segment.

public partial class ATMDeposit : Form {
private BankAccount account;
public ATMDeposit() {
InitializeComponent();
}
private void ATMDeposit_Load(object sender, EventArgs e) { account = new BankAccount();
}
private void cmdDeposit_Click(object sender, EventArgs e) { account.Deposit(decimal.Parse(txtAmount.Text));
}
}

You analyze the code segment and find that the form handles no other events. You need to suggest changes to improve reliability. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

You create Microsoft Windows-based applications. You are designing a unit test for a form in an application. You write the following code segment. (Line numbers are included for reference only.)

01 public partial class frmCalculation : Form {
02 public frmCalculation() {
03 InitializeComponent();
04 }
05 private void cmdFib_Click(object sender, EventArgs e) { 06 lblResult.Text = Fibonacci(int.Parse(txtNumber.Text)).ToString(); 07 }
08 private void cmdFac_Click(object sender, EventArgs e) { 09 lblResult.Text = Factorial(int.Parse(txtNumber.Text)).ToString(); 10 }
11 private int Fibonacci(int number) {
12 if (number < 3)
13 return 1;
14 else
15 return Fibonacci(number – 1) + Fibonacci(number – 2);
16 }
17 private int Factorial(int number) {
18 int total = 1;
19 for (int x = number; x > 1; x–)
20 total *= x;
21 return total;
22 }
23 }
You need to identify the methods that must be included for unit testing. Which methods should you choose?