[单选题]
What is the mass of an objecw4yx a7zss8ylg/+le4 t that weighs 250 N on the surface of thefm1vb4 / c/-qck ;rbxw Earth where the acceleration due mfkc //1qrb v;bwx-c4to gravity is $9.80 \; m/s^2$?
A. $250 \; kg$
B. $24.5 \; kg$
C. $25.5 \; kg$
D. $2,450 \; kg$