You hang a 10 kg mass from a copper wire, and the wire stretches by 8 mm. Then you hang the same mass from a second copper wire, whose cross-sectional area is half as large (but whose length is the...

You hang a 10 kg mass from a copper wire, and the wire stretches by 8 mm. Then you hang the same mass from a second

copper wire, whose cross-sectional area is half as large (but whose length is the same). What happens?

(A) The second wire stretches 4 mm.

(B) The second wire stretches 8 mm.

(C) The second wire stretches 16 mm.