Question

Meg grows broccoli in a square plot in her garden. She created a drawing of her broccoli plot on a coordinate grid. The locations of three corners of the plot are represented by coordinates (3, 0), (1, 6), and (7, 8).

Which of these coordinates represent the fourth corner?

(8, 2)
(8, 3)
(9, 2)
(9, 3)