Parallelogram ABCD is a rectangle. Which statements are true?

Select each correct answer.

2AX=BD

AD¯¯¯¯¯⊥CD¯¯¯¯¯

BC=CX

m∠ABX=m∠CBX
A rectangle A B C D. Side A B and side C D are parallel. Side A D and B C are parallel. Diagonal B D and A C intersect each other at a point labeled as X.