Need help on understanding how they obtained the answers

Problem 13 A put option on yen is uritten with a strike price of Y105.00/. Which spot price marimizes your profit if you choose to erercise the option before maturity? A. 100/$ B. 105/$ C. Y110/8 D. 115/$ Answer: D Use the following table to answer Problems 14 through 17 Apr 19, 2009, h Pound Otion Prices (cents per pound, 62300 pound contracts. Strike 1448 1448 144.0 145.0 020 0.68 072 Problem 14 What was the closing price of the British pound on April 18, 2009? A. S14.48/A B. 1.448/S C. $1.448/EV D. none of the above Answer: C Problem 15 Refer to Table 1. The ezercise price of the right to buy pounds in June has cost per pound of ----_ giving the purchaser for a total price of A. 144.8; 0.68 cents; 8425.00 B. 144.0; 1.42 cents; 8887.50 C. 144.8; 1.02 cents; 8637.50 D. 144.0; 1.06 cents; 8662.50 Answer: B Problem 16 Refer to Table 1. The May call option on pounds with a strike price of 144.0 mean A. S0.88/ B. S88/L per contract. C. $0.0088/E D. none of the above Answer: C Problem 17 Refer to Table 1. The May put option on pounds with a strike price of 144.0 mean A8052/ . B. 852/ per contract. C. $0.0052/E D. none of the above Answer: C