(a) ascertain the whereabouts and amounts of the said petroleum products and the aforementioned proceeds of sale; (b) ascertain the costs of United Nations activities concerning the elimination of weapons of mass destruction, the provision of humanitarian relief in Iraq and other operations; (c) transfer no more than 30 per cent of Iraq's annual value of its exports of petroleum and petroleum products to the Compensation Commission; (d) use the remainder of funds for United Nations operations and activities; (e) repay, from any available funds in the escrow account, any sum transferred to the account or State from which it was transferred, if the transfer is found at any time by him not to have been of funds subject to this resolution.