Samuel launched his business on 1 January 2023 and purchased two delivery vans at $12000$ each. He charges depreciation on all vehicles at $10\%$ per annum, worked out monthly, by the straight-line method. On 1 April 2024, he disposed of one van and substituted it with a larger model that cost $24000$. What was the balance on the provision for depreciation of delivery vehicles account on 31 December 2024?
- A$3300
- B$4200
- C$5700
- D$6600