A soap manufacturer is experimenting with several formulas of soap powder. Three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows: 
What is the sum of the ranks for Formula C?
Definitions:
Tea Sales
This refers to the commercial activity of buying and selling tea in various forms and quantities.
Perfectly Price Inelastic
A situation in demand where the quantity demanded does not change regardless of changes in the price of a product or service.
Demand Curve
A graph showing the relationship between the price of a good and the quantity of that good that consumers are willing to buy.
Perfectly Price Elastic
A situation in which the quantity demanded or supplied changes infinitely in response to any change in price.
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