Carrie is making a map of her favorite park, using a coordinate system with units of yards. The merry-go-round is at position (4, 8) and the slide is at position (–3, 5). How far apart are the slide and merry-go-round?
Select one:
A ) 3.2 units
B ) 10.0 units
C ) 8.1 units
D ) 7.6 units