[单选题]
A mass is hung from identical wires made of aluminum, xiqj2 thw(rk67d:+ewoxwwv1p j1 )7pbrass.u. auc0kn h9 pcn,bugyx4)l-, copper, and steel. Which wire will .u yug-b4h,pccnx a n. ul)90kstretch the least?
A. aluminum
B. brass
C. copper
D. steel
E. all the same
