Assume that you have a European call option and put an option with an exercise price of 9,000 won and a maturity of 3 months and another european call option and put option with the same maturity and the same underlying asset but with an exercise price of 10,000 assuming that the riskfree interest rate is 12 obtain the noarbitrage initial cash ows (ie, option prices) by using the credit box and debit box