Look at triangle ABC. Coordinate grid shows negative 5 to positive 5 on the x axis and y axis at intervals of 1. A triangle ABC is shown with A at ordered pair 4, 5, B at ordered pair 1, 2, and C at ordered pair 4, 2. What is the length of side AB of the triangle? (1 point) a Square root of 6 b 3 c Square root of 18 d 6