Which Statement Is TRUE

Which statement is TRUE?

A) When using test-retest reliability, the same test is administered twice to the same sample, and the correlation coefficient for the two sets of scores is computed.
B) In split-half reliability, different forms of the test are administered to the same sample at different times, and a correlation coefficient for performance on the two forms is calculated.
C) In alternate-form reliability, performance on half of the test items is compared to performance on the other half of the items.
D) All the answers are correct.