[单选题]
A 500-N weight sits on the small pto t+g6 jf4gs g1296l2su aeypiston of a hydraulic machine.;h9z d1 wsm,hk The small piston m wsk19zh;dh, 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. $40000 \; N$