Below are three possible useful lives of operating assets. Assume a company has chosen the double-declining balance (DDB) depreciation method For each useful life, indicate the correct DDB rate to be used in the depreciation calculation. A. If the useful life is 4 years, the DDB rate i 10% 20% B. If the useful life is 5 years, the DDB rate i 25% 33.33% 40% C. If the useful life is 10 years, the DDB rate 50%