A load of 85,000 N (19,100lbf) is applied to a

A load of 85,000 N (19,100lbf) is applied to a cylindrical specimen of a steel alloy (displaying the stress–strain behavior shown in Figure) that has a cross-sectional diameter of 15 mm (0.59 in.).
(a) Will the specimen experience elastic and/or plastic deformation? Why?
(b) If the original specimen length is 250 mm (10 in.), how much will it increase in length when this load isapplied?