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Persons A and B are roommates. Person A smokes and Person B does not. The index 5 measures how smoky the room is. It varies from 5:0, where there is no smoke in the room, to 5:1, when the room is filled with smoke. Thus, 1-s measures how \"clean\" the air in the room is. Person A's utility function is uA(xA,s)=xA+1Os, where xA is the amount of money Person A owns. Person B's utility function is uB(xB,'ls)=xB+5('l-s), where x3 is the amount of money Person B owns. Each person starts with an endowment of 5 units of money. Person A has the legal right to fill up the room with smoke. If Persons A and B can exchange money for the right to smoke and make any deal that would make them both better off, what final amounts of money may Person A be left with? O a. None of the other answers. 0 b. xA may take the values in [6,7] 0 c. xA may only be equal to 5 C) d. xA may only be equal to 10 0 e. xA may take the values in [8,9]