Suppose that two players submit sealed bids for a share of $50.  Bids must be in $15 increments.  Bids of $0 are not accepted. If the sum of the bids does not exceed $50 then the players receive the amount of their bid.  If the sum of the bids exceeds $50 then the game ends and the players received nothing.  This Nash bargaining game has __________ Nash equilibrium strategy profiles.
a.	2
b.	4
c.	3
d.	1
e.	0