A county wants to build one centrally-located processing facility to serve the county's four recycling drop-off locations. The four drop-offs have characteristics as given in the table below. What is the approximate center of gravity of these four locations?

Location	X- Coordinate	Y- Coordinate	Tonnage
Drop-off point A	1	8	10
Drop-off point B	6	7	35
Drop-off point C	6	2	25
Drop-off point D	4	7	30

A. (4.90, 5.85)

B. (4.75, 6.04)

C. (17.00, 24.00)

D. (4.25, 6.00)

E. (490, 585)