We need to find the length of row of chocolates if May lays 4 chocolate pieces end to end in a row. Let the length is L. It is equal to the product of length of one chocolate and no of chocolate. So,
Answer: A Explanation: Area of a rectangle = length * width= 2 * 5n = 10n. So Jenny was correct and Alan was wrong (because the length of the rectangle is not 2n; it is just 2)