I think it's B 34 so it's not c or a :3
I just took both AP micro and macro. I don't think any answer would be more appropriate than suppliers and demanders.
The given angles sum to less than 90°, so the remaining angle must be more than 90°. (The total of all angles is 180°.) Triangle ABC has an angle greater than 90°, so is obtuse. Since the triangles are similar, their corresponding angles are congruent. Hence ...
.. D. Triangle XYZ is obtuse.
