please solve with excel

Suppose that Sudbury Mechanical Drifters is proposing to invest $10 million in a new factory. It can depreciate this investment straight-line over 10 years. The tax rate is 40%, and the discount rate is 10%. Suppose that the government allows companies to use double-declining-balance depreciation with the option to switch at any point to straight-line. What is the present value of the depreciation tax-shields? A $2,491,933 B) $2,741,127 C) $3,114,917 D) $2,516,108 E) $2,284,272 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9 Year 10 Double-decline depreciation rate depreciation tax shield PV (tax shields) Total