In a father-son-grandson business combination, which of the follwoing is true?
a) The father company always must have its realized income computed first.
b) The computation of a company's realized income has not effect on the realized income of other companies within a business combination
c) A father-son-grandson configuration does not require consolidation unless one company owns shares in all of the other companies
d) All companies solely in subsidiary positions must have their realized income computed first withing the consolidation process.