The medium and long-term treasury bond futures in the United States adopt the price quotation method. In its quotation, such as 1 18'222 (or 1 18-222), the quotation consists of three parts, namely "①118' 222 ③ 2". The "①" part can be called the integer part of the treasury bond futures quotation, and the "②" and "③" parts are called the decimal part of the treasury bond futures quotation. Part ③ is marked with four numbers: 0, 2, 5 and 7. Option ABCD is the four numbers that make up the third part.