[单选题]
A 1200-kg ferryboat is m ozl-*r nky)6movh efwkt./b,k8 ing south at 20 m/s. What is the magnitude of its moment.h/8 te, wkbfkum?
A. $1.7 \times 10^{-3} \; kg \cdot m/s$
B. $6.0 \times 10^{2} \; kg \cdot m/s$
C. $2.4 \times 10^{3} \; kg \cdot m/s$
D. $2.4 \times 10^{4} \; kg \cdot m/s$
