The answer is either D. or B. It REALLY depends on which was you are talking about. My honest answer is D.
Why is dr causey interested
There was alot of competion ... the soviet union actually ended up dropping out of the cold war because america had out spent them...they were trying to see how much better each other was in technological advances
Answer: Rising prices give a signal to consumers to reduce demand or withdraw from a market completely, and they give a signal to potential producers to enter a market. Conversely, falling prices give a positive message to consumers to enter a market while sending a negative signal to producers to leave a market.
Explanation: Hopefully this helps you with whatever you are doing. This is a long answer. Hopefully you will get extra credit for this answer