11. Halstead Industries applies the units-of-activity method of depreciation for its equipment. Which statement below contains a true statement. a. Halstead Industries will record $0 depreciation expense during an accounting period if the equipment remains idle during the period. b. Halstead Industries will determine depreciation expense by dividing the depreciable cost by the expected useful life of the equipment. c. Halstead Industries will prorate depreciation expense if the equipment is only owed for part of the accounting period. d. All statements shown above are false