Grandmere, a calendar year domestic corporation, owns 50 percent of Petit, Inc., a calendar year controlled foreign corporation. At the end of 2017, Petit has accumulated $26 million of undistributed income and has $4.2 million of cash.

a. Compute Grandmere’s mandatory inclusion amount related to ownership of Petit.

b. Compute Grandmere’s tax due on its mandatory inclusion amount.

c. Beginning in 2017, determine Grandmere’s installment payments of tax due on its mandatory inclusion amount.