Which of the Following Statements Is Correct

Multiple Choice

Which of the following statements is correct?

A) Changing the units of measurement of x or y does not change the value of the correlation r.
B) A negative value for the correlation r indicates the data are strongly unassociated.
C) The correlation always has the same units as the x variable but not the y variable.
D) The correlation always has the same units as the y variable but not the x variable.