You should pay attention to what I said earlier. Soviet pilots are backward in parts, but they are advanced on the whole, because the design and combination are coordinated. That is, there are two elements. Option c, the two beat the men's and women's singles champion somewhere. Both of them are worse than the singles champion, but they can beat them because of their good cooperation. Obviously, this option is in line with the effect of MIG -25. In B, only the collocation problem is mentioned, but not the scarf and shoes (these parts), only one element is mentioned. I don't know. Did you say that?