Answer: A and B both are correct statements.
Step-by-step explanation:
Let ABCD is a parallelogram then its properties are as follows:-
1. Opposite angles and sides of parallelogram are always congruent.
i.e.AB=CD and AD=BC and ∠A=∠C and ∠B=∠D
2.Consecutive angles are supplementary.
i.e. ∠A+∠B=180° and ∠B+∠C=180°
3. Its diagonals bisect each other.
4. The sum of all the angles is 360°.