A student has a copper wire and a steel wire with equal lengths and cross-sectional areas. The student hangs identical loads on the two wires. The extensions of the two wires are different. The student calculates the stress, strain and Young modulus of each wire. Which row identifies with a tick (√) the calculated values that are equal for both wires? [Table with columns: stress, strain, Young modulus and rows A, B, C, D. Row A: stress has tick. Row B: strain has tick. Row C: Young modulus has tick. Row D: stress and Young modulus have ticks.]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.