All other dividends shall be classified as business or nonbusiness income without regard to this subparagraph.
Sales shall be considered to be made to a state only if the corporation making the sale may otherwise be subject to a tax on, or measured by, net income under the Constitution or laws of the United States, and shall not include sales made to a corporation whose income and apportionment factors are taken into account pursuant to subdivision (a) in determining the amount of income of the taxpayer derived from or attributable to sources within this state.
Ca. Rev. and Tax. Code § 25110