GAUSS8 2015 Problem 20

A rectangle has side lengths 3 and 4. One of its vertices is at the point (1,2). Which of the following could\:not be the coordinates of one of its other vertices?

Answer Choices
A. (-3,-1)
B. (1,-5)
C. (5,-1)
D. (-2,6)
E. (1,-1)