How are a parallelogram and a trapezoid different?
A.
A trapezoid has only 1 pair of parallel sides, but a parallelogram has 2.
B.
A parallelogram has 4 right angles, but a trapezoid doesn't need to have 4 right angles.
C.
A parallelogram has only 1 pair of parallel sides, but a trapezoid has 2.
D.
A trapezoid has 4 right angles, but a parallelogram doesn't need to have 4 right angles.