Sofia sells homemade soaps for $6 each. Every day, she spends $50 on ingredients and 3 hours to make 100 soaps. Typically, she sells 90 soaps and uses the rest as samples. A boutique offers Sofia an order to supply 100 soaps for $5.50 each, and she would need to spend $15 on delivery. Sofia cannot both accept the boutique's order and sell the soaps in her usual market. Which of the following statements is true in this decision-making context for Sofia? A. Only the revenues and the delivery cost are relevant to the decision. B. Only the delivery cost is relevant to the decision. C. Both expenditures on ingredients and the delivery cost are relevant for the decision. D. All revenues and expenditures on ingredients and delivery cost are relevant to the decision