52. In computing the amounts received or deemed to have been received as proceeds of the tax by a person under an agreement made with the Minister under section 51, the Minister may(a) require that such person render an exact account of purchases, sales and use of fuel made by him and warrant, to the satisfaction of the Minister, any claim for losses of fuel caused by evaporation, contraction, spillage or any similar cause; or
(b) grant to that person the deductions established by regulation for such losses.