Which of the Following Statements Is False Regarding Consolidated Tax

Which of the following statements is false regarding consolidated tax returns?

A) For a group of corporations filing a consolidated tax return, losses from certain intercompany transactions are deferred until realized through a transaction outside
Of the group.
B) To file a consolidated tax return, one corporation must own at least 50% of the stock of another corporation.
C) For a group of corporations filing a consolidated tax return, an advantage is that losses of one group member may offset gains of another group member.
D) An affiliated group can file a consolidated tax return only if it elects to do so.