S. 68 : Cash credits –Demonetisation-Cash deposits in bank during demonetisation period-Explanation that deposits were from recorded cash sales-Stocks existing on date of sale, no backdating-Complete stock tally maintained, books audited, no deviation in gross profit ratio, parties identified, proper invoices and VAT returns filed-No evidence of bogus sales-Cash deposits cannot be treated as unexplained income. [S. 115BBE]