I want to know how to get the correct answer and which one i

I want to know how to get the correct answer and which one is it?

0 2 pts Question 2 Select the pair of characteristics which represent only material properties. Load rate and Span rrect Answer Unit Stress, Fb, and Modulus of Elasticity, E Unit Stress, Fb, and Moment of Inertia, I ou Answered Moment of Inertial, I, and Modulus of Elasticity

Solution

Moment of inertia is a mathermatical term. It does not represents the material properties. It represents the sectional properties. So, option B and D are not correct. And span does not represents the material property. So option A is eliminated.

Stress and modulas of elasticity represents the material properties. Those are unique for given material.