Which of the Following Is TRUE

Which of the following is TRUE?

A) When a market price allocates resources, all people who are willing and able to pay that price get the resource.
B) A command system works well when the range of activities to be monitored is large and complex.
C) When the government decides how to allocate tax dollars among competing uses, resources are allocated by market prices.
D) When a manager offers everyone in the company the opportunity to win a prize, resources are allocated by a lottery.