Data Sufficiency (DS) | Re: If A,B and C are distinct points, do line segments AB and BC

I thought since A B C and D form a rectangle, there is no way AB = BC no matter how you draw it. Shouldn't the answer be A?

Official explanation as below:
Explanation: Statement (1) is insufficient. If AB and BC are two sides
of a rectangle, they might be equal, but they might not be. Also, it's possible
that they are not both sides of a rectangle: it's possible that one of them is a
diagonal of the resulting rectangle.
Statement (2) is also insufficient. This tells us nothing about BC.
Taken
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