Answer:
The correct answer is $ 265.
Step-by-step explanation:
The gross price at which the product is required to be sold is the price inclusive of all taxes charge on behalf of the Government (sales tax, federal excise duty etc).
So the sale price in the case given in the question will be sum of 250 dollars and 15 dollars that is 265$.
Please note that income tax in not included in price of the product.