A five-year-old boy is playing with his two-year-old sister when he calls to tell his mother that the girl put a dime in her mouth. The mother could not find anything in the girl's mouth so she brings her to the emergency department. Your physical examination is normal. Which of the following is the next best step?
a.Obtain X-ray of the neck, chest, and abdomen
b.Order barium contrast studies
c.Provide reassurance to the mother
d.Request for urgent endoscopy