To Control the Problems of Interviewers Not Strictly Following the Sampling

Multiple Choice

To control the problems of interviewers not strictly following the sampling plan,supervisors should keep daily records of all of the following EXCEPT:

A) the number of calls made.
B) the number of not-at-homes.
C) the number of refusals.
D) the number of completed interviews for each interviewer.
E) supervisors should keep daily records of all of the selections to control interviewers.