S. 92C : Transfer pricing-Arm’s length price-Avoidance of tax-International transaction-Allocation of common expenses-Allocation done by the TPO on the basis of revenues from the two segments is in order-Adjustment on account of payment of customs duty-No adjustment is allowable on account of the fact that the assessee has paid more customs duty than that paid by the comparables-Most appropriate method-TNMM should be applied in respect of international transaction of sale of finished goods.