The price quotations of Treasury bonds in the Wall Street Journal show an ask price of 104.25 and a bid price of 104.125. As a buyer of the bond, what is the dollar price you expect to pay if the par is $1,000?

A) $1,048.00 B) $1,042.50 C) $1,040.40 D) $1,041.25

please give a calculation process, thanks