A Mother Says,"I Changed His Diaper,fed Him,burped Him,and He Won't

A mother says,"I changed his diaper,fed him,burped him,and he won't stop crying.I even tried playing music for him and shaking this toy for him.What am I doing wrong?" Which is the nurse's best response?

A) "Why don't you try feeding him a little bit more?"
B) "Here,I'll take him back to the nursery so you can rest."
C) "Are you sure you burped him enough?"
D) "He may be overstimulated.Try snuggling him close."