14. Show that the cost of a claim with payoff Sn(Sn K) is N W Vo = sa K So, 1 + 2 where w= (u + d)(1+i) ud. 14. Show that the cost of a claim with payoff Sn(Sn K) is N W Vo = sa K So, 1 + 2 where w= (u + d)(1+i) ud