Select the correct answer.
A student is given this proof.

Given:

Prove:
A perpendicular line between AC and BD with O as a point of intersection. A vertical line MN passes O

Given the angle, AOC is equal to DON it points towards the first property of congruence angle AOM is equal to Angle BOM it again points to the second point of congruence angle CON is equal to the angle of BOM. Vertical angle BOM is equal to angle

The student says that the proof shows that because they are vertical angles.

Which statement best corrects the student's interpretation?

A.
because they are supplementary, not because they are vertical angles.
B.
because they are complementary, not because they are vertical angles.
C.
because they are both congruent to the same angle, not because they are vertical angles.
D.
because they are vertical angles.