[单选题]
Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0),i7do g4cud72 j (1.0 m, u1:j* 9 .rwoloimr2 wk1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the cenw*r:ru owk im jlo.291ter of mass of the system?
A. (1.3 m, 0.67 m)
B. (1.3 m, -0.67 m)
C. (-1.3 m, 0.67 m)
D. (-1.3 m, -0.67 m)
