Which of the following statement is true with regard to users of end users of data warehouse?

A. DW also assists top level management in knowing whether a critical change has taken place in the business, is the change showing any pattern

B. The knowledge workers are the mangers working at the middle level of the organisation

C. The operational staffs also need information to perform their functions on day to day basis

D. The knowledge workers are the mangers working at the lower level of the management hierarchy

Answer: Option D