[单选题]
A solid object floats in water with 5uh m3mh-.+gtuyip * 8ag.dtn uez4f,three-fourths of its voq6t0cvwa u,4tlume beneath the surface. What is the object's w a 6vctt4,uq0density?
A. $1333 \; kg/m^{3}$
B. $1000 \; kg/m^{3}$
C. $750 \; kg/m^{3}$
D. $250 \; kg/m^{3}$
