Civil Engineering - Strength of Materials - Discussion

During a tensile test on a ductile material:
Nominal stress at fracture is lower than the ultimate stress because the cross-sectional area reduces significantly before fracture, leading to necking.
True stress at fracture is higher than the ultimate stress because it takes into account the reduced cross-sectional area at the point of fracture.

So, the correct answer is True stress at fracture is higher than the ultimate stress.

I think nominal stress is the engineering stress and Engineering stress at fracture will be higher than ultimate stress because ultimate stress will be computed on the basis of original cross-sectional area whereas necking takes place when a material reaches to fracture zone.

Option B is right. I agree.