In the diagram, points P, Q, R, and S are at intersections of gridlines in a 6 \times 6 grid. What is the perimeter of parallelogram P Q R S ?
Answer Choices
A. 14
B. 15
C. 16
D. 17
E. 18
In the diagram, points P, Q, R, and S are at intersections of gridlines in a 6 \times 6 grid. What is the perimeter of parallelogram P Q R S ?
Answer Choices
A. 14
B. 15
C. 16
D. 17
E. 18