(13)Where it appears to the Assessing Officer that owing to the close connection between the assessee carrying on the eligible business to which this section applies and any other person, or for any other reason, the course of business between them is so arranged that the business transacted between them produces to the assessee more than the ordinary profits which might be expected to arise in such eligible business, the Assessing Officer shall, in computing the profits and gains of such eligible business for the purposes of the deduction under this section, take the amount of profits as may be reasonably deemed to have been derived therefrom.