1. please provide a complete explanation, thank you

(c) Diana's Keto Bakery bakes fresh bread every morning. Any keto bread not sold by the end of the day is thrown away (all the charitable homes refuse to take any leftover keto bread from her). A loaf of bread costs Diana $2.00 to produce, and she charges her customers $8 per loaf. Suppose near the end of one day, Diana still has 10 loaves of keto bread on hand. How much should she sell the remaining keto bread for? Explain your answer with reference to (a) relevant princip1e(s) of economics. [9 marks]