Note that this swing throw does not aim to gain yards. The objective is to get the disc as far across the field as possible. This pattern trades some yardage gain in order to get the disc across to the break side.
C's cut goes all the way to the far sideline, and B's throw should go out as wide as possible
You can practice the same pattern for use against poaching or zone defences; just emit the cutter movement by having them start on the finishing positions. This is particularly useful for less experienced players.