B acquired a lorry on 1 May 20X0 at a cost of $30,000. The lorry has an estimated useful life of four years. B charges depreciation by using the reducing balance method at a rate of 20%. What will the depreciation charge for the lorry be in B's accounting period to 30 September 20X0? A. $6,000 B. $2,500 C. $4,000 D. $4,500