With Regard to Bank Bills,the Expression 'The Issuer Sells the Bill

With regard to bank bills,the expression 'the issuer sells the bill at the best discount' means the issuer:

A) is providing the funding.
B) is acting as mediator between the borrower and the bank.
C) is selling the bill into the market at the lowest yield.
D) pays the lowest face value of the funds to the holder at maturity.