Nancy purchased $80,000 worth of common stock by borrowing $32,000 from her broker. She paid the rest to satisfy the initial margin requirement. The initial stock price is $160 per share. The maintenance margin requirement is 45%. The broker charges 8% on the margin loan. If the stock price changes from $160 to $120 one year later, what is the remaining margin (percentage margin) in the account? A. 46.7% B. 44.3% C. 80.0% D.42.4%