Credit cards. Made American Express sales totaling $10,000. Service charge fee is 5%. The entry is Select one: a, debit accounts receivable - american express 9,500; debit service charge expense 500; credit sales 10,000 b. debit sales 10,000; credit cash 9,500; credit service charge expense 500 c. debit cash 9,500; debit service charge expense 500; credit sales 10,000 d. debit accounts receivable - american express 10,000; credit sales 10,000