An African American couple express concerns about a "Bruise" on their newborn's buttocks. They ask if their baby was injured during birth. Describe your appropriate response (as a nurse).
a) "This is a common occurrence and often referred to as a 'mongolian spot'."
b) "The bruise-like mark is due to a concentration of pigmentation cells."
c) "It typically fades over time and does not require any treatment."
d) "However, we will continue to monitor it during your baby's check-ups."