In the figure below, the Curves
A,B
and C respectively correspond to: Select one: a. 20 mm Steel, 20 mm Brass and 30 mm Brass. b. 30 mm Brass, 20 mm Steel and 20 mm Brass. c. 30 mm Brass, 20 mm Brass and 20 mm Steel. d. 20 mm Brass, 30 mm Brass and 20 mm Steel.