Look at points C and D on the graph: HOW U PUT A PHOTO :=)

A coordinate plane graph is shown. Point C is at 1 comma 3. Point D is at 4 comma negative 3. A segment connects the two points.

What is the distance (in units) between points C and D? Round your answer to the nearest hundredth.

1. 3.01 units.
2. 5.20 units.
3. 6.50 units.
4. 6.71 units.