Order Effects and Carryover Effects Differ in That

Multiple Choice

Order effects and carryover effects differ in that

A) carryover effects only occur when there are two independent variables.
B) for carryover effects it doesn't matter which treatment occurs first, just how often it is repeated.
C) for order effects it is only the ordinal position of the treatment that matters.
D) for carryover effects it is only the ordinal position of the treatment that matters.