Problem Solving (PS) | Re: The area bounded by the curves |x + y| = 1 and|x - y| = 1 is

I have a query with the wording of the question
it says : The areabounded by the curves |x + y| = 1, |x - y| = 1 is
A. 3
B. 4
C. 2
D. 1
E. None

Based on answers here it appears we consider them as four straight lines (not curves). Curves usually are written by x^2 + y^2 format; but since it said curves I thought it would be circular--> so in case its a non - square in the equation;I assume it to be lines not curves?? Will keep in mind in case I come across such language/ format later
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