The figure shows triangle pqr and some of its transformed images on a coordinate grid: a coordinate grid is shown from positive 6 to negative 6 on the x-axis and from positive 6 to negative 6 on the y-axis. a triangle labeled pqr is shown on ordered pair 1, 1 and 1, 4 and 3, 1. another triangle labeled image a is shown on ordered pair 1, negative 1 and 1, negative 4 and 3, negative 1. another triangle labeled image b is shown on ordered pair negative1, negative 1 and negative 1, negative 4 and negative 3, negative 1. another triangle labeled image c is shown on ordered pair negative 5, 1 and negative 5, 4 and negative 3, 1. another triangle labeled image d is shown on ordered pair negative1, 1 and negative 1, 4 and negative 3, 1. which of the four triangles was formed by a translation of triangle pqr? a b c d