Label each of the following statements as True or False. If false, explain why. 

a. Business analysts who are highly trained in management science have a special expertise for performing prescriptive analytics. 

b. The decision model of a business problem is the system of equations and related mathematical expressions that describe the essence of the problem. 

c. The proper criterion for judging the validity of a decision model is whether the model predicts the relative effects of the alternative courses of action with sufficient accuracy to permit a sound decision.