Which of the Following Would You Consider to Be an Example

Multiple Choice

Which of the following would you consider to be an example of repeated-measures design?

A) 6 participants are given analgesia and 6 a placebo; effects of pain relief after 4 hours is recorded.
B) 12 participants are given analgesia, 6 are asked to record pain level after 2 hours and the remaining 6 participants after 4 hours.
C) 12 participants are asked to record pain level after 4 hours then given analgesia.
D) None of the above.