Private Member Access Within a Class

Question

Consider the following `BankAccount` class definition.

```java
public class BankAccount {
    private double balance;
    private String accountNumber;
    
    public BankAccount(String num, double bal) {
        accountNumber = num;
        balance = bal;
    }
    
    public void transfer(double amount, BankAccount other) {
        if (amount > 0 && amount <= this.balance) {
            this.balance -= amount;
            other.balance += amount;
        }
    }
    
    public double getBalance() {
        return balance;
    }
}
```

Which statement best explains why the `transfer` method can directly access the private instance variable `other.balance`?

Accepted Answer

Methods can access private fields of any object of the same class type passed as a parameter

Answer

Private fields become accessible to all methods when objects are passed by reference

Answer

The balance field is automatically made public when passed as a parameter

Answer

The transfer method has special privileges because it modifies multiple objects

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