Two masses $$m_1 = 5$$ kg and $$m_2 = 10$$ kg, connected by an inextensible string over a frictionless pulley, are moving as shown in the figure. The coefficient of friction of horizontal surface is 0.15. The minimum weight m that should be put on top of $$m_2$$ to stop the motion is:

A

10.3 kg

B

18.3 kg

C

27.3 kg

D

43.3 kg