The correct answer is C.

Transformation is not a recognized procedure in the refinement of alphas. The process of refining alphas typically involves scaling, trimming, and neutralization. Scaling involves adjusting the alphas to have a mean of 0 and a standard deviation that is a product of the volatility and the Information Coefficient (IC). Trimming involves eliminating very large positive or negative alphas that could unduly influence the results. Neutralization involves adjusting the alphas to be neutral with regards to certain factors such as the benchmark, cash, industry, risk factor, etc. However, transformation, which involves changing the form or character of something, is not a recognized procedure in the refinement of alphas.

Choice A is incorrect. Scaling is a recognized procedure in the refinement of alphas. It involves adjusting the size of alpha estimates to ensure they are comparable across different strategies or time periods.