Shown below is a stress-strain curve for four different materials. o o A D E Which material is... a) the stiffest? b) the most ductile? c) the most brittle? d) the strongest? e) the most resilient? f) the most pliable (least stiff)? Provide a brief justification for each. g) Now, match materials A, B, D, and D to the following materials that could have such a stress-strain curve: glass, rubber, high-carbon steel alloy, elemental metal