Enquiry letter u/s 148A(a) of the income tax act

one person received this letter from the ITO for information regarding the FY 2016 -17 relevant AY 17-18. this letter mention that such person deposit cash during this period but he was not deposit cash during this period. he is agriculture and no other income. he take the loan as limit from the bank but during the said FY no high amount of cash deposit by said person. Another fact is no income tax return was filed for said FY.
how is give reply of this letter.