To test orthopedic materials, two rods of the same dimensions are subjected to identical compressive forces on their ends. One rod is made of stainless steel (Y = 180 X 109 Pa), the other is made of titanium alloy (Y = 110 X 109 Pa). Which rod undergoes the greatest change in length?
A. Stainless steel rod
B. Titanium alloy rod
C. Same for both