May I please get help with answering this. I need to select all that must be true

(a) Square: 4 perpendicular sides with the same length
It has:
-) 4 right angles
-) All sides congruent
-) Two pairs of parallel sides
(b) Trapezoid
It has:
-) Only one pair or parallel sides
(c) Parallelogram
It has:
-) Two pairs of parallel sides