someone help me out with this questions. thanks in advance

(e) Assume a call and put option on the same underlying, having the same maturity and exercise price. For a given change in the underlying asset's value, would the call and put options have the same change in their premiums? Explain what determines the extent of change in option values. marks) (f) If futures can be used for hedging, arbitrage and speculation, what is the need for options ? (4 marks) (g) What is a contingent claim ? Describe the best instrument for hedging such a claim. (2 marks)