The company accountant is uncertain which of three depreciation methods the firm should use for welding equipment that costs $150,000, and has a zero salvage value at the end of a 10-year depreciable life. Compute the depreciation schedule for the welding equipment using the methods listed:

A) Straight line

B) Double declining balance

C) Sum-of-years digits

Based on your analysis, which depreciation method is most profitable for the firm?

Please show your work and I will rate the correct answer! Thank you in advance.