we are trying to solve beck taxi Ivey case study. we are looking at it from the point of view of a consultants, who are appointed by the Souter for providing them with the one option out of four option related to pricing. The four options are maintain the status quo, increase the fixed fee, reduce the fixed fee and charge a fee and change a fee for each dispatch, and reduce the fixed fee only for the summer. can you provide the option that we as a cunsultants suggest to the CEO of Beck taxi along with the spreadsheep model that explains why the chosen option is most prefered and others are least prefered?