Which of the Following Is True of Customer Satisfaction Measurement

Which of the following is true of customer satisfaction measurement?

A) Customer satisfaction measurement programs and questionnaires are designed by customers.
B) Research related to customer satisfaction measurement was performed on a continual basis.
C) Customer satisfaction measurement included evaluation of company's satisfaction performance and excluded competitors' satisfaction performance.
D) Results of all research related to customer satisfaction measurement were made available to customers, but not necessarily to employees.