[单选题]
A car is negotiating a flatixhke m;. 4gfet,r f-+ curve of radius 50 m with a speem,4 lc p:pbst0y higqq+d50 .md of 20 m/s. The centripetal fi.+pymc0 m :hl,qb pt4 0dq5sgorce provided by 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. $2000 \; kg$
