A System Consists of Two Particles: Particle 1,having the Mass

A system consists of two particles: particle 1,having the mass m₁ = 4.0 kg is located at (-4.0 m,1.0 m) and particle 2,having the mass m₂ = 5.0 kg is located at (2.0 m,1.0 m) .The magnitude of the position vector of the center of mass of the system is

A) 0.92 m.
B) 1.2 m.
C) 2.9 m.
D) 3.6 m.
E) 4.1 m.