Can someone please help me?

What is a counterexample for the following conjecture? If a counterexample does not exist, choose not possible.
Conjecture: All quadrilaterals are rectangles. (1 point)
a)A trapezoid is a quadrilateral and it is not a rectangle.
b)All quadrilaterals are not rectangles.
c)A triangle is not a quadrilateral, and it is not a rectangle.
d)not possible

Question

Can someone please help me?

What is a counterexample for the following conjecture? If a counterexample does not exist, choose not possible.
Conjecture: All quadrilaterals are rectangles.  (1 point)  
a)A trapezoid is a quadrilateral and it is not a rectangle. 
b)All quadrilaterals are not rectangles.  
c)A triangle is not a quadrilateral, and it is not a rectangle.  
d)not possible

poopsiedoodle · Answer

A would be a good choice probably. A counterexample is something that disproves a conjecture (which is pretty much a theory/hypothesis, but with math). Since A disproves the conjecture, that's most likely the answer.

anonymous · Answer

Thank you so much

poopsiedoodle · Answer

yw :3

chris911 · Answer

yes A

chris911 · Answer

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anonymous · Answer

If yous know anyone who goes to Connections Academy please let me know, thanks

anonymous · Answer

I go to Connections Academy! Message me