Derby bought a factory on 1 January 20X3 for $180,000. It is depreciated monthly on a straight line basis over 50 years. On 1 July 20X6 the factory was revalued to $223,000. What should the depreciation charge be for the ended 31 December 20X6? A $4,200 B $4,226 C $4,464 D $4,800 Sir, correct answer is B but my answer is $4172..which one is correct? Thanks in advance