The price of a stock is $67. A trader sells 5 put option contracts on the stock with a strike price of $70 when the option price is $4. The options are exercised when the stock price is $69. What is the trader's net profit or loss? O a. Gain of $1,500 O b. Loss of $1000 Oc. Gain $500 Od Loss of $500 O e. Loss of $1,500