On a Graph, High Correlation Between the Variable Measured Along

On a graph, high correlation between the variable measured along the x-axis and the variable measured along the y-axis

A) means that changes in the variable measured along the x-axis must cause changes in the variable measured along the y-axis.
B) does NOT mean that a change in the variable measured along the x-axis must cause a change in the variable measured along the y-axis.
C) means that changes in the variable measured along the y-axis must cause changes in the variable measured along the x-axis.
D) means that changes in either variable must cause changes in the other variable.