n calculating a$$ taxpayer's AMT, adjustments for timing differences will be made for all of the following assets except for

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Part $1$

A$.$

incentive stock options.

B$.$

an office building placed in service in $2020.$

C$.$

machinery placed in service in $2020($bonus depreciation is not$$ applicable$).$

D$.$

All of the above will require a timing adjustment for AMT.