Please write the calculation process, thank you !!!!

1. An exotic option, with strike price, K = 60 has a premium of 5. The option has a payoff of 0 when S_T is 70, -5 when S_T = 65 and 5 when S_T = 55. Which of the following best describes the option?

1. Gap call
2. Compound call on put
3. Average price Asian put
4. Gap put
5. Down-and-in call

2. Which of the following best represents the put-call parity relationship for American-style options on a non-dividend paying stock?

1. C P = S₀ Ke^-rT
2. C + Ke ^-rT = P + S₀
3. P Ke^-rT S₀
4. S₀ K C P S₀ Ke^-rT
5. S₀ K C P S₀ Ke^-rT

3. Shares in Buddy plc are currently trading at $110 per share. The share has volatility of 19% per annum and the riskless rate of interest is 1.85% per annum. What, according to the Black-Scholes-Merton (1973) approach, is the delta of an at-the-money, 4-month European put option written on one Buddy share.

1. -0.45578
2. 0.54422
3. 0.500546
4. -0.49945
5. -0.54422

4. If a non-dividend-paying stock price follows a geometric Brownian motion. What will be the process followed by a forward contract written on the stock?

1. dF = Fdt + (-r)Fdz
2. dF = Fdt + Fdz
3. dF = dt + dz
4. dF = Sdt + Sdz
5. dF = (-r)Fdt + Fdz

5. Which of the following correctly describes a credit default swap?

1. The exchange of interest exposure in one currency for interest rate exposure in another currency
2. An agreed exchange of repayments on corporate bonds
3. A contract that provides insurance against default by a reference entity
4. A futures position to hedge foreign currency exposure
5. An agreed exchange of fixed and floating interest payments on a notional principal