Suppose the Apple's stock price is $100. The price of a call on Apple's stock with strike price of $108 is $2.5, while the price of a put on Apple's stock with same strike price is $3. (5 points)

(a) What is the margin requirement if a trader want to write 10 naked calls with strike price of $108 ? (1.5 points)

(b) What is the margin requirement if a trader want to purchase 10 calls with strike price of $108 for cash?(1 points)

(c) What is the margin requirement if a trader want to write 10 naked puts with strike price of $108(1.5 points)

(d) What is the margin requirement if a trader want to buy 10 puts with strike price of $108 for cash( 1 points)