Operating profit.
(C) Operating profit. Operating profit of each controlled participant from the activities in which cost shared intangibles are exploited, as determined before any expense (including amortization) on account of IDCs, may be used as an indirect basis for measuring anticipated benefits. This basis of measurement will more reliably determine RAB shares to the extent that such profit is largely attributable to the use of cost shared intangibles, or if the share of profits attributable to the use of cost shared intangibles is expected to be similar for each controlled participant. This circumstance is most likely to arise when cost shared intangibles are closely associated with the activity that generates the profit and the activity could not be carried on or would generate little profit without use of those intangibles.