an investor purchases a call option on a fixed income security index for $30. which of the following results is most likely to occur if the index at expiration is $700 given an exercise price of $600 a)the option will be allowed to expire b)the option will be exercised and the payoff will be $30 c)the option will be exercised and the profit will be $70 d)the option will be exercised and the profit will be $100