(e)specialised nature of business activity of the assessee,and interests of the revenue, is of the opinion that it is necessary so to do, he may, after giving the assessee a reasonable opportunity of being heard, and with the previous approval of the Principal Chief Commissioner or Chief Commissioner or Principal Commissioner or Commissioner, direct the assesse to get either or both of the following:—(i)to get the accounts audited by an accountant, and to furnish a report of such audit in the prescribed form duly signed and verified by such accountant and setting forth such particulars, as may be prescribed, and such other particulars as the Assessing Officer may require;(ii)to get the inventory valued by a cost accountant, and to furnish a report of such inventory valuation in the prescribed form as duly signed and verified by such cost accountant and setting forth such particulars, as may be prescribed, and such other particulars as the Assessing Officer may require.