Answer: -$5

The correct answer is **A (-$5)**. **Explanation:** The value of the call option to the call seller at expiration is determined by the payoff formula for the seller, which is: \[ \text{Payoff} = -\max(0, S_T - X) \] Where: - \( S_T \) is the price of the underlying at expiration ($30). - \( X \) is the strike price ($25). Substituting the values: \[ \text{Payoff} = -\max(0, 30 - 25) = -\max(0, 5) = -5 \] Thus, the call seller's payoff is -$5, which matches option A. Options B and C are incorrect because they either ignore the payoff formula or incorrectly incorporate the option premium into the calculation of the call seller's value at expiration.

Author: LeetQuiz Editorial Team