The following scatter plot shows:

a$.($C$)$ & $($F$)$ are examples for no correlations while $($A$)$ and $($E$)$ are examples for perfect correlations.

b$.($B$)$ & $($F$)$ are examples for no correlations while $($A$)$ and $($E$)$ are examples for perfect correlations.

c$.($B$)$ & $($D$)$ are examples for no correlations while $($A$)$ and $($E$)$ are examples for perfect correlations.

d$.($B$)$ & $($C$)$ are examples for no correlations while $($D$)$ and $($E$)$ are examples for perfect correlations.