Assume Two Threads Share a BankAccount Object with Balance of Zero

Assume two threads share a BankAccount object with balance of zero (0) , and that the BankAccount class provides deposit and withdraw methods as shown below. Thread one deposits $10 ten times and, concurrently, thread two withdraws $10 ten times. Suppose a race condition occurs, and the race is finished first by thread one. What would you expect balance to be after all thread calls?
Public void deposit(int dollars)
{
Int newBalance = balance + dollars;
System.out.println("depositing") ;
Balance = newBalance;
}
Public void withdraw(int dollars)
{
Int newBalance = balance - dollars;
System.out.println("withdrawing") ;
Balance = newBalance;
}

A) $10
B) $20
C) $0
D) a negative amount