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Sets A, B, C and D are all subsets of quadrilaterals. A is the set of rhombi, B is the set of rectangles, C is the set of parallelograms, and D is the set of kites. What is the set (A B) (C D)?
Options:
A .  squares
B .  rectangles
C .  parallelograms
D .  rhombi
Answer: Option D
:
D
A B is a set of quadrilaterals that are both rhombi and rectangles - which are squares. C D is a set of quadrilaterals that are both parallelograms and kites - which are rhombi. Finally, the union of squares and rhombi are... rhombi.

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