In Color Conscious by K. Anthony Appiah and Amy Gutmann, Gutmann Gutmann discusses three major objections to preferential hiring.Preferential hiring is said to be wrong because 1) it violates the principles of non-discrimination (by being "reverse" discrimination),2) highly qualified people are passed over in favor of less qualified applicants,3) innocent whites are made to pay the cost of an unjust system that they themselves did not create. What is Gutmann's opinion towards these claims?