On $28$ February $2021,$ the last day of the financial period, the following balances appeared in the accounting records of Adorable Dogs: Equipment at cost$,$ R$60000$ Accumulated depreciation on equipment $(1$ March $2020),$ R$20000$ New equipment was purchased from Computer Ltd on $1$ December $2020,$ R$10000.$ Depreciation on equipment has not yet been recorded. Depreciation is calculated at $15\%$ on the diminishing balance method. The amount for depreciation on equipment for the $2021$ financial yearend in the statement of profit or loss and other comprehensive income will be:

A$.$ R$5500$

B$.$ R$4000$

C$.$ R$4875$

D$.$ R$6000$