Correlations Can Range from -1

Correlations can range from -1.0 to 1.0, reflecting three different types of relations between study time and number of grocery items from a list that are remembered. Which of the following statement satisfies the condition "r = 0"?

A) Study time has no relation to remembering grocery items from a list.
B) As study time increases (or decreases) , the number of grocery items remembered also increases (or decreases) .
C) When study time increases (or decreases) , the number of grocery items remembered decreases (or increases) .
D) Study time has relation to remembering items from the list.