6. Nick sold an American put option with an ExP of $68 and received a premium of $9.90. Three months later the current MP of the underlying security upon which the put option was written was $48.10. The option was exercised against him. What was Nick's holding period rate of retum? Assume he did not cover his position and that he did not have any margin requirements when he wrote the put option a.-201.01% b. -101.01% C.-14.56% d. -14.71% e. 0.00% he had no investment