Crows Plc Purchased a Photocopier on 1 July 2012 for £30

Crows Plc purchased a photocopier on 1 July 2012 for £30 000.It was estimated that it would have a useful life of 3 years and produce 5 000 000 copies over its life.The asset's residual value is estimated at £3000.Other similar assets are depreciated on a reducing balance method is at 40% rate.Which of the following statement is correct for year ending 30 June 2013?

A) If the straight-line method is used, depreciation expense is £10 000.
B) If the reducing balance method is used, depreciation expense is £10 800.
C) If the sum of digits method is used, depreciation expense is £13 500.
D) If the reducing balance method is used, depreciation expense is £10 800 and if the sum of digits method is used, depreciation expense is £13 500.