Right hemicolectomy with no contamination or spillage is a clean-contaminated case: antibiotics are prophylactic (a single preoperative dose), and therapeutic courses are only for contaminated cases. So continuing IV antibiotics for 5 days is the inappropriate order. Early mobilization and LMWH for DVT prophylaxis are standard. The bank key (A, oral fluids after 24 h) is not supported by the sources.