Which of the Following Conditions About the Dependent Variable (Y)

Multiple Choice

Which of the following conditions about the dependent variable (Y) and the covariate (X) is required for ANCOVA?

A) Both X and Y are measured on interval or ratio scale.
B) Both X and Y are measured in the same unit.
C) Both X and Y are independent of the independent variable.
D) Both X and Y are measured without error.