A designed experiment was performed on a pizza making process. Three factors were used in this experiment $-$ A$)$ pizza dough B$)$ Amount of cheese C$)$ Rack position. Based on the analysis, the following main effects and interaction plots were generated in Minitab. If the main effects $($A&B$)$ are significant and the $AB$ interactions is also significant, what should the factors be set at in order to achieve the highest taste index?

A

A high, B low

A low, B low

Not enough information

$B$ high regardless of what $A$ is set at