For personal property assets placed in service after December 31, 1986, and before December 31, 1998, alternative minimum tax (AMT) generally requires that depreciation be calculated using which of the following methods (assuming that no election is made by the taxpayer)?

a) 200% declining-balance for any property

b) a system prescribed by AMT that is not MACRS

c) MACRS

d) Pre-TRA'86 ACRS