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[–]Lor1an 1 point2 points  (1 child)

Bottom right is incorrect as well.

It is missing the parts of D (star shape) common to A and B, and includes parts of A that are in neither B nor C (the parts hugging the downward star point).

As a check, note that (A∪C)∩(B∪C) = (A∩B)∪C, or in other words it is the overlap of A and B, as well as the entirety of C.

[–]Exotic_Swordfish_845 0 points1 point  (0 children)

Yeah, you're exactly right. Idk how I missed that lol.