A Corporation Has a Machine That Cost $100,000, with an Estimated

A corporation has a machine that cost $100,000, with an estimated useful life of 5 years and a residual value of $25,000.Immediately after the end of the second year, the company decided to change from SYD to straight-line depreciation.The entry to record the change would include an effect on accumulated depreciation which would be a:

A) $30,000 credit.
B) $15,000 credit.
C) $30,000 debit.
D) $15,000 debit.