Which of the following is NOT correct about information systems implemented in the operational level and in the strategic level?
a. Information systems at the operational level are designed to automate repetitive activities
b. Executive level always focusses on the effectiveness of business processes
c. Information systems at the strategic level are used to obtain aggregate summaries of trends and projections of the future
d. At the executive level, information systems provide KPIs that are focused on balancing performance across the organization
e. Sales transaction processing at operational level can improve the efficiency of business processes that are related to customers