[单选题]
Three masses, 1.0 kg, 2.0 krze)r aok:m44g, and 3.0 kg, are located at (0, 0), +uaw j*l-kzo4 (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of thuo aj-4l+k wz*e center 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)
