Assuming you are a gold trader. You expect to buy 1,000 g of gold on 30 December. Since the gold price in the market is on an increasing trend, you decided to purchase a call option from a counterparty (call writer). The strike price of the gold is $235 per g and you will have to pay an option premium of $10 per g for this right.

a) Draw a diagram (graph) showing the variation of the traders profit with the gold price at the maturity of the option.

b) Lets say you are a call writer instead of call buyer, how would your graph look like using the same information above?