[单选题]
A 10-kg box sitting on a horizontal surface is pi up6x.wqi5 e:-sqi 4 u(acb+bull- cl5oacgb yt2g2 ;n2;qexx,bed by a 5.0-N force. A 3.0-N friction force retards the motion. Wlo5;;cxxey,- cgq2 2ab g2 tbnhat is the acceleration of the object?
A. $0.20 \; m/s^2$
B. $0.30 \; m/s^2$
C. $0.50 \; m/s^2$
D. $5.0 \; m/s^2$