[单选题]
A mass is hung from ident38-iw/ 6iw j 3khrcxfpical wi6 e voze6mh-v2in+o1 *emzto:res made of aluminum, brass, copper, and steel. Which wire will stretch the least6no6:evo2 +e mzmhetvi 1zo-* ?
A. aluminum
B. brass
C. copper
D. steel
E. all the same
