A patient with 12cm abscess in liver which was drained under sonographic monitoring 3 times and On follow up a residual cavity of 4cm was found to be present .An oral lumicidal drug was given for 14 days. Next plan of action shall be

• A. USG weekly for 1 month followed by monthly USG till 1 year.
• B. Stool examination serially
• C. Monthly CT scan
• D. USG weekly for 1 month followed by CT scan at 3 months.