[单选题]
A car is negotiating a f fpn(8zv;rckrbk, (h)lat curvnvq (.zr7q)eu+p6d bje of radius 50 m with a speed of 20 m/s. The centripetal force provided j.eud+qp r (7vbq6)znby friction is $1.2 \times 10^{4} \; N$. What is the mass of the car?
A. $500 \; kg$
B. $1000 \; kg$
C. $1500 \; kg$
D. $2000 \; kg$
