Concept:Discounting a bill of exchange means the holder receives cash before the bill matures by selling it to a bank.Explanation:A holder of an accepted bill need not wait until the maturity date to get paid.He can take the bill to his own bank, which deducts interest or discount charges and pays the remaining amount.The bank later recovers the full value from the acceptor when the bill matures.Thus, the normal practice is for the holder to discount the bill at his bank.Answer:B. his bank