[单选题]
A 500-N weight sits on (8v a2 (5r hsxuqhaf4ethe small d5q tcor94v **btroym i0t+2 npiston of a hydraulic machine. The small pistonv+nt 5r*bicm or0tto4d*92y q has area $2.0 \; cm^{2}$. If the large piston has area $40 \; cm^{2}$, how much weight can the large piston support?
A. $25 \; N$
B. $500 \; N$
C. $10000 \; N$
D. $40000 \; N$