The following is a list of various costs of producing sweatshirts. Classify each cost as either a variable, fixed, or mixed cost for units produced and sold. Electricity costs of $0, 025 per kilowatt-hour. Warehouse rent of $6,000 per month plus $0.50 per square foot of storage used. Thread. Lubricants used to oil machinery. Janitorial costs of $2,000 per month. Advertising costs of $10,000 per month. Sales salaries. Color dyes for producing different colors of sweatshirts. Salary of the production supervisor. Straight-line depreciation on sewing machines. Patterns for different designs. Patterns typically last many years before being replaced. Maintenance cost with sewing machine company. The cost is $2,000 per year plus $0.001 for each machine hour of use. Property taxes on factory, building, and equipment. Cotton and polyester cloth. Hourly wages of sewing machine operators