A. is $1. B. is $2. C. is $3. D. cannot be determined with the information given

The above figure shows the market for laptops. Which of the following causes a movement from A to B?

A) a decrease in the number of laptop manufactures and sellers B) an increase in the cost of hard drives C) an increase in the productivity of the workers manufacturing laptops D) a decrease in the price of laptops E) an increase in the price of laptops

Compared to a single-price monopoly, the output of a perfectly competitive market with the same costs

A) is more than the monopoly's output. B) is the same as the monopoly's output. C) is less than the monopoly's output. D) could be more than, less than, or equal to the monopoly's output.