A Wire 25-M Long Has a Cross-Sectional Area of 2 $\times$

Multiple Choice

A wire 2.5-m long has a cross-sectional area of 2.5 mm².It is hung vertically,and a 4.5-kg mass is hung from it.By how much does the wire stretch if Young's modulus for that material is 2.0 $\times$ 10¹¹ N/m²?

A) 0.22 mm
B) 2.2 mm
C) 0.022 mm
D) 0.72 mm
E) 0.072 mm