[单选题]
A 10-kg box sitting on a s :zdc:w6- vju4uo2:ri ivk axu7e+8uhorizont)uv f/z1oxg4ym-ll08k pk,lcal surface is pulled by a 5.0-N force. A 3.0-N friction fv8 z1 uxky /-4lcl,0polgfm)korce retards the motion. What 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. $5.0 \; m/s^2$
