[单选题]
A 5000-N force compresses a steel block by 0.0025 cm. How g;yu:u i8wwts d8fg/g-s( 3j hmuch force would be //7 cjy2zfn6d c*oqojneeded to cc ofjd n6j2y7/qo /*zcompress the block by 0.0125 cm?
A. $1000 \; N$
B. $2500 \; N$
C. $5000 \; N$
D. $25000 \; N$