Compute the 2020 AMT exemption for the following taxpayers. If an amount is zero, enter "O". Click here to access the exemption table. a. Bristol, who is single, has AMTI of $566,600. Her AMT exemption is $ X. b. Marley and Naila are married and file a joint tax return. Their AMTI is $1,176,800. Their AMT exemption is $ 0 X