Erik draws quadrilateral ABCD

. If side AB=40x
, side BC=4+3y
, side CD=8x+32
, and side AD=9y−20
, for what values of x and y can Erik be sure that his quadrilateral is a parallelogram?(1 point)
Responses

x=40
and y=16
x equals 40 and y equals 16

x=1
and y=4
x equals 1 and y equals 4

x=4
and y=1
x equals 4 and y equals 1

x=20
and y=8