we absolutely agree with you, supervisor sbrerned, on that and have left -- elsbernd, on that and have left some of the costs in on that bases. if student i.d. cards were used, there wosh some savings associated with that. which i'll explain in a minute. so option one, which is summarized on this table, and you can see the bottom line is about $5.9 million in lost revenue, increased costs. and this is a net amount. so we made some -- we broke it up here into the monthly pass purchases and the revenue lost on that which is about $3.3 million. and then almost the same amount lost in cash fare. and that's about $3.2 million which gets us to a total in lost revenue of $6.4 million. this option that i'm describing right now assumes student i.d. cards would be used instead of the clipper card. so it eliminates that per tap fee. and the savings there is shown, and that's based on the percentage of youth riding the system. and per tap fee that is charged to them. and that's $891,6 20 as you can see there in savings or fees that would no longer have to be paid. offsetting that, there's an incre