[单选题]
A cart with an initial velocity wl( t c06;nj-;suyjgpof 5.0 m/s experiences a constant xe8x2v,vux 6m cux)8ro(lv c ;acceleration of ve xm)v 26u(x;8xuolcrx8, cv $2.0 \; m/s^2$. What is the cart's displacement during the first 6.0 s of its motion?
A. $10 \; m$
B. $55 \; m$
C. $66 \; m$
D. $80 \; m$
