A. How does a price ceiling set below the equilibrium level affect the quantity

A. How does a price ceiling set below the equilibrium level affect the quantity demanded and quantity supplied?
B. Explain the concept of the Production Possibilities Frontier.
C. Calculate Maria’s opportunity cost of reading 120 pages of Sociology if she can read 80 pages of Economics in an hour. She can also read 40 pages of Sociology in an hour. She spends 6 hours per day studying.
Answer each question clearly .
Short answers aren’t accepted at all .
APA reference style is required.
the answer must be by own words and provided in details along concepts and rich of information .