Which of the Following Statements Is True Regarding Post-Hoc Tests

Multiple Choice

Which of the following statements is true regarding post-hoc tests and planned contrasts?

A) Both statistical tests are planned ahead of time.
B) Post-hoc statistical tests examine all of the possible combinations of conditions in a way that statistically accounts for the fact that not all of them were predicted ahead of time.
C) Neither statistical test compares between groups.
D) Post-hoc tests combine two conditions so you can compare them with a third.