GMAT Sentence Correction (SC) | Re: Comparing tensile strength, spider's silk is much better at

Comparing tensile strength, spider's silk is much better at holding its own weight than high-grade alloy steel , considerably lighter because the organic composition is less dense than the metallic elements.

A. Comparing tensile strength, spider's silk is much better at holding its own weight than high-grade alloy steel

B. Comparing tensile strength, spider's silk is much better than high-grade alloy steel at holding its own weight

C. Comparable in tensile strength, spider's silk is much better