Jennifer Has Just Had a Baby

Jennifer has just had a baby.When she brings Thomas home,she regales you with the details of her hospital stay.She mentions that shortly after the birth,Thomas received an intramuscular injection of vitamin K,and she wondered why this was done,as it made him cry.You explained that it

A) was needed to prevent eye disease.
B) prevented possible bleeding events.
C) protected the baby from lipid oxidation.
D) was needed to promote good bone growth.