I don't know if this is right, but I'm pretty sure it's B.
Is either I’m blind and can’t see or the letter are way too small
Answer:
In triangle QNP and QNM
3.QN=QN[common side]
so triangle QNP and QNM is CONGRUENT by A.A .S axiom.
Maintaining the same width of the compass as AB, draw an arc from point X such that it intersects the afternoon drawn from N in a point