If a fetus develops erythroblastosis fetalis, what medical intervention is often required at birth?

Which one of the following is considered an early sign of inadequate breathing in children?

A) Blue-gray skin B) Barrel chest C) Nasal flaring D) Crying

Which of the following is a late sign of shock?

a. hypotension b. tachycardia c. tachypnea d. weakness