Let's analyze the given details:

• Number of option contracts = 10
• Total number of shares = 1,000 (which means each contract covers 100 shares, standard in options).
• Cost per option contract = $270. Therefore, the total cost of the options = $270 × 10 = $2,700 (Option A is incorrect).
• Option style = American. American options can be exercised at any time prior to expiration, not just at expiration (Option B is incorrect).
• Strike price ($K$) = $22.50
• Final stock price ($S_T$) = $24.69. Since $S_T > K$ ($24.69 > $22.50), the call option has intrinsic value and is in the money, not at the money (Option C is incorrect).

Now, let's calculate the profit/loss if exercised at expiration: Value upon exercising = $(S_T - K) \times \text{Number of Shares}$ Value upon exercising = (24.69 - 22.50) \times 1,000 = \`2.19 \times 1,000 = \$2`,190$.

Profit/Loss = Value received from exercising - Total cost of the options Profit/Loss = \`2,190 - \2`,700 = -\`510`$.

This means the total loss is $510, making Option D the correct statement.