Reference: Ref 10-6 (Figure: ABC Company) the Figure Depicts the Market

Multiple Choice

Reference: Ref 10-6 (Figure: ABC Company) The figure depicts the market for a water cleaner for home aquariums. After use it gets washed down drains and enters into streams where it improves the mineral content of the water and thus leads to better water quality and better fish growth. What is the efficient quantity in this market?

A) 1,600
B) 400
C) 2,000
D) 3,600