[单选题]
A student pulls a box of b5 m23q0ohntc n2pqya 9ooks on a smooth horizo)tw75 )wqh koyntal floor with a force of 100 N iw)hqw7yk )5to n a direction of $37^{\circ}$ above the horizontal. If the mass of the box and the books is 40.0 kg, what is the acceleration of the box?
A. $1.5 \; m/s^2$
B. $1.9 \; m/s^2$
C. $2.0 \; m/s^2$
D. $3.3 \; m/s^2$
