If a Child Suffers from Congenital Analgesia, Why Must He

If a child suffers from congenital analgesia, why must he or she be careful when outside playing?

A) The child often cannot hear sounds unless he or she is within 3 feet of the source.
B) The child cannot feel pain and can suffer injuries without even knowing it.
C) The child lacks the ability to react to a dangerous situation.
D) The child's sense of smell does not work properly.