Suppose that the domestic risk free rate is r and dividend yield on an index is q. How
should the put-call parity formula for options on a non-dividend-paying stock be
changed to provide a put-call parity formula for options on a stock index? Assume the
options last T years.
A. The stock price is replaced by the value of the index multiplied by exp(qT)
B. The stock price is replaced by the value of the index multiplied by exp(rT)
C. The stock price is replaced by the value of the index multiplied by exp(-qT)
D. The stock price is replaced by the value of the index multiplied by exp(-rT)
In the Gaussian copula model which of the following is true
A. The time to default for a company is assumed to be normally distributed.
B. The time to default for a company is assumed to be lognormally distributed
C. The time to default for a company is transformed to a normal distribution
D. The time to default for a company is transformed to a lognormal distribution