Which of the Following Is NOT One of the Ways

Which of the following is NOT one of the ways in which validity problems can arise in the use of available statistical data

A) Elements of the operation of organizations may not be measured directly by the data the organizations collect.
B) Operational definitions may be changed so that variables can be measured with the data available.
C) Procedures used in gathering data by an organization may change over time.
D) All of the answers represent ways in which validity problems can arise.