The Midwest Sales region of Acme Computer Company consists of five states—Illinois, Indiana, Iowa, Missouri, and Wisconsin. About 50 percent of the regional customers reside in Illinois, 20 percent in Indiana, and 10 percent in each of the other three states. Suppose you have input records con-taining Acme customer data, including state of residence. To most efficiently select and display all customers who live in the Midwest Sales region, you would ask first about residency in _________.
a. Illinois
b. Indiana
c. either Iowa, Missouri, or Wisconsin—it does not matter which one of these three is first
d. any of the five states—it does not matter which one is first
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