just need some help thank you

An investor has purchased United States dollar call options, with an exercise price of A$1.15 and a premium of A$0.03 per unit. (a) Calculate the break-even price. (1 mark) (b) Calculate the profit or loss of the option for the investor if the spot rate at the time the investor considers exercising the options is : (1) A$1.10 (2) A$1.17 (3) A$1.23. (c) What is the maximum loss for the investor? (6 marks) (1 mark) (d) Explain why the investor could have an unlimited profit if the options are exercised. (3 marks) (e) Explain in general the similarities of and differences between a currency call option and a currency put option