Triangle J′K′L′ shown on the grid below is a dilation of triangle JKL using the origin as the center of dilation: Two triangles are drawn on a grid. First triangle has vertices J 8 and 12, K 4 and 8, L 12 and 6. Image triangle has vertices J prime 4 and 6, K prime 2 and 4, L prime 6 and 3.

Which scale factor was used to create triangle J′K′L′?

4
one quarter
2
one half