The corrosion allowance, typically 0.125 In. for carbon steel and 0.065In. for stainless steel, is added to the calculated material thickness to arrive at the final plate thickness that will be used in the design of the equipment. The type of corrosion against which this allowance is used is : A. Pitting B. Galvanic corrosion C. Uniform corrosion attack on the metal surface D. Crevice corrosion