A \( 100-\mathrm{kg} \) box is sitting on a horizontal surface. The coefficient of static friction between the box and the ground is 0.60 , and the coefficient of dynamic friction is 0.30 . What normal force must be exerted on the box? Firiction \( =\mu\left(F_{\text {normal }}\right) \)
A. 880 N
B. 745 N
c. 261 N
D 484 N