XYZ stock currently trades at a price of $40 a share. Investors also have the ability to purchase either a call option or a put option on XYZ stock. Both options both have an exercise price of $41, and they both expire one year from today. The options are both European options (they can only be exercised on the expiration date), and XYZ stock does not pay a dividend. If the risk-free interest rate is 3%, and the put option sells for a premium of $6, the (no-arbitrage) price of the call option is