When Evaluating Dog Food Labels, Comparisons Between Different Food Types

When evaluating dog food labels, comparisons between different food types are made by converting dry food analysis to a dry matter basis. What is the general rule for performing this calculation for dry dog food?

A) When converting to a dry matter basis, add 10% to the listed value
B) When converting to a dry matter basis, add 25% to the listed value
C) When converting to a dry matter basis, subtract 10% to the listed value
D) When converting to a dry matter basis, subtract 25% to the listed value