Squires Ltd purchased equipment for $90 000 on 1 July 2020 which had an estimated useful life of 200 000 units or 4 years. The equipment was depreciated using the units of production method. The financial year of Squires Ltd ends on 30 June. What was the depreciation expense for year ended 30 June 2021 if 26 000 units were produced in that year? O a. $11,700 O b. $11,000 O c. $22,500 O d. $23,400