Which of the Following Must Be True for a Test

Multiple Choice

Which of the following must be true for a test or questionnaire to be considered reliable as measured by the computation of test-retest reliability?

A) People would have to have identical scores on the two administrations of the test.
B) People would have to hold very different relative positions in the distributions for the two test times.
C) People would have to hold similar relative positions in the distributions for the two test times.
D) People would have to have scores on the two administrations of the test that were uncorrelateD.