可以帮忙画图解释下吗？不知道F0(T)和S(T)是怎么取值的啊？

问题如下：

Consider the buyer of a 6 × 9 FRA. The contract rate is 6.35% on a notional amount of $10 million. Calculate the settlement amount of the seller if the settlement rate is 6.85%. Assume a 30/360 day count basis.

选项：

A.

-12,500

B.

-12,290

C.

+12,500

D.

+12,290

解释：

The seller of an FRA agrees to receive fixed. Since rates are now higher than the contract rate, this contract must show a loss for the seller. The losses $10,000,000 × (6.85%−6.35%) × (90/360) = $12,500 when paid in arrears, i.e., in nine months. On the settlement date, i.e., brought forward by three months, the loss is $12,500 / (1 + 6.85% × 0.25) = $12,290.