Upon reflection, Hiro decides that the weights he would assign to each criteria are as follows: Economy $30\%,$ Safety $15\%,$ Reliability $15\%,$ Style $15\%,$ and Comfort $25\%.$

a$.$ Create a multicriteria scoring model for this problem.

b$.$ Create a radar chart showing the weighted scores for each car on each of the criteria.

c$.$ According to this model, which car should Hiro purchase?

d$.$ Suppose Hiro is uncertain about the weights he assigned to the comfort and safety criteria. If he is willing to trade comfort for safety, how would the solution change?

e$.$ Suppose Hiro is uncertain about the weights he assigned to the economy and safety criteria. If he is willing to trade economy for safety, how would the solution change?