Considering that it has an angle of 90º degrees, the triangle is classified as:
B. right
In this problem, two angles are 40º and 50º. Since the sum of the angles is of 180º, we have that:
x + 50 + 40 = 180
x = 90º.
Hence, it is a right triangle, and option B is correct.
More can be learned about right triangles at https://brainly.com/question/26396675