n the following images you can see an expert system that calculates the safe distance that a car must apply, using $2$ input variables: Velocity in km$/$h and Visibility in $\%.$

a$)$ Indicate which rules are activated for a car that is moving at $105$ km$/$h and the visibility is $40\%$ due to fog. Write the level of activation of the premisses.

b$)$ Write also which is the level of activation of the labels in the conclusions of these rules. Indicate the steps to calculate it$.$

c$)$ What will change if the Degree of Support of rule R$8$ had a value below $50\%?$ Put an example of the new outputs.