The Demand function for a product is given by: D(q)=0.0003q2 -0.04q + 23.56 where q is the number of units sold and D(q) is the corresponding price per unit, in dollars. A) What is the average rate of change of Demand between 55 and 150 units sold? (Include as many decimal places as is possible.) Answer: B) What are the appropriate units for the rate of change? O Dollars per unit, per unit O Dollars per unit O Units per dollar Units per dollar, per dollar