Which Combination of Design and Fiber Characteristics Should Produce the Best

Which combination of design and fiber characteristics should produce the best carpet?

A) Wool/nylon blend, tightly twisted yarns, properly heat set, with a compatible pile height and density and a heavy latex backing
B) Polyester/nylon blend, tightly twisted yarns, properly heat set, with a face weight of 48oz
C) Olefin/nylon blend, level loop construction, properly heat set, with a pile height equal to the pile density
D) Wool/nylon blend, tufted carpet, with a face weight of 32oz., adhered to a latex backing