The entry to record a return by an on account customer of defective merchandise on which no sales tax was charged includes: A. a debit to Accounts Receivable and a credit to Sales Returns and Allowances. B. a debit to Return Expense and a credit to Accounts Receivable. C.a debit to Sales Returns and Allowances and a credit to Accounts Receivable. D. a debit to Sales and a credit to Sales Returns and Allowances.