Answer: €0
Step-by-step explanation:
A Call Option is exercised when the market price is greater than the strike price.
Here the Market Price is $1.35 and the Call Option is $1.33.
The loss to Citigroup as the seller therefore is,
= (1.35 - 1.33) * 500,000(contract size)
= €10,000
However because it was sold at a premium of €0.02 by Citigroup we have to account for that.
= 0.02 * 500,000
= €10,000
The Premium made by Citigroup on the sale was €10,000 but they suffered a loss of €10,000 as well.
These cancel each other out meaning that there was NO PROFIT or LOSS.