A, B, C, and D are the consecutive vertices of a quadrilateral.
Angle ABC and Angle BCD are right angles.
If the two statements above are true, then which of the following also must be true?
A: Angle ABCD is a rectangle
B: Line AB is parallel to DC
C: Line BC is parallel to AD
D: Triangle ACD is a right triangle.
Note: I was not given an image or anything, just the question itself.