A Mother Calls the Pediatrician's Office Because Her Infant Is

A mother calls the pediatrician's office because her infant is "colicky." What is the most helpful measure the nurse can suggest to the mother?

A) Sing songs to the infant in a soft voice.
B) Place the infant in a well-lit room.
C) Walk around and massage the infant's back.
D) Rock the fussy infant slowly and gently.