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Math·Algebra·Linear equations in two variables

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A total of 271 toothpicks of equal length were used to construct two types of figures: triangles and squares. The triangles and squares were constructed so that no two figures had a common side. The equation $3x+4y=271$ represents this situation, where $x$ is the number of triangles constructed and $y$ is the number of squares constructed.

What is the best interpretation of $(x,y)=(13,58)$ in this context?

A

If 13 triangles were constructed, then 58 squares were constructed.

B

If 13 triangles were constructed, then 58 toothpicks were used.

C

If 58 triangles were constructed, then 13 toothpicks were used.

D

If 58 triangles were constructed, then 13 squares were constructed.