Because ABCD is a right-angled trapezoid, CD is not equal to BC. According to the properties of angular bisector, CD:BC=BH:DH, so 1 is wrong.

Two is also wrong, because if the equation holds, it can be transformed into CE:CH= root 2, that is, CD=BD and the angle DBC=45 degrees, so AD=AB= (root 2/2)BD, so AB= 1/2CD= 1/2BE.

So choose D.

Then send the topic, maybe I read it wrong.