Which of the following items would be variable with respect to the number of cones sold at a Baskins & Robbins shop? (Select all that apply.)

Which of the following items would be variable with respect to the number of cones sold at a Baskins & Robbins shop? (Select all that apply.)

The cost of lighting the store.

The wages of the store manager.

The cost of ice cream.

The cost of napkins for customers.