Sally wants to start a lemonade stand. She has calculated at what point her revenue will cover her stand's costs. Based on this calculation, she has decided she needs to sell 75 glasses of lemonade at $6 per glass. Which important element is Sally not accounting for in her analysis?  

1) Target return pricing 

2) Consumer demand 

3) Fixed and variable cost determination 

4) Break-even analysis 

5) Market share