Four customers have accounts at a broker-dealer with the following balances: Securities Cash Commodities & Futures Options Customer 1 $50,000 $20,000 $0 $30,000 Customer 2 $40,000 $10,000 $0 $20,000 Customer 3 $30,000 $20,000 $10,000 $40,000 Customer 4 $50,000 $40,000 $0 $40,000 Under SIPC rules, which customer will not be fully covered if the broker-dealer declares bankruptcy? A Customer 1 B Customer 2 C Customer 3 D Customer 4