<prompt> Under the DOTS strategy of Revised National Tuberculosis Programme, the recommended line of management is category I patients, if the sputum is positive after 2 months of intensive phase treatment with 4 drugs, is to -Sta the continuation phase of treatment with INH and rifampicinContinue the intensive phase of treatment with 4 drugs for 1 more month only, regardless of sputum positivity after thatContinue the intensive phase of treatment with 4 drugs until the sputum becomes negativeAdd one more drug, that is, to use 5 drugs until the sputum becomes negative  <response>: Continue intensive phase for 1 month with 4 drugs. Reference:Park;s textbook of preventive and social medicine,K.Park,23rd edition,page no:188 p 