Why is this incorrect?

(Is the following shape a right triangle? How do you know?
A. There is not enough information to determine.
B. Yes, the two sides are perpendicular, and the side lengths fit the Pythagorean theorem.
C. No, the side lengths do not fit the Pythagorean theorem.
D. No, there is no right angle.)

Why is this incorrect Is the following shape a right triangle How do you know A There is not enough information to determine B Yes the two sides are perpendicul class=