A cylindrical can needs to hold 500 cm³ of apple juice. The height of the can must be between 6 cm and 15 cm. What are the dimensions of the can so that the minimum amount of material is used?

a. Utilizes optimization techniques for minimum material usage.
b. Involves finding critical points in the cylinder's dimensions.
c. Focuses on maximizing the volume of the cylindrical can.
d. Considers the relationship between height and radius.