Ans: B. Wait and watchRef: NBIH Button bsttery ingestion triage and treatment guideline.The management of a Button battery ingestion depends upon the anatomical site of the impacted battery.Button batteries that have cleared the stomach usually pass through the gastrointestinal tract within one week without complications.Follow-up radiographs should be performed in asymptomatic patients who have not passed the battery by 10 to l4 days, regardless ofsize or earlier if patient becomes symptomatic.