Problem
Suppose that Miss Bella borrows the present value of $100 today, buys a six month Put option on stock Y with an exercise price of $150 and sells a six month Put option on stock Y with an exercise price of $50.
a) Draw a diagram showing the payoffs when the options expire.
b) Suggest two other combinations of loans, options, and the underlying stock that would give Miss Bella the same pay-off.