9. MMC changed depreciation methods from straight-line to sum-of-the-years'-digits on two of its machines. Data on the machines are as follows: Machine Cost Residual Value Useful Life $100,000 $4,000 4 $160,000 $10,000 5 B If MMC makes the change at the beginning of Year 2 of the life on each machine, what is the total amount of the catch-up adjustment for this change? a. $56,000 debit to Accumulated depreciation b. $34,400 debit to Accumulated depreciation C. $34,400 credit to Accumulated depreciation d. The effects of this change are accounted for prospectively; therefore, a catch-up adjustment is not recorded. e. $34,400 credit to Retained earnings