A health benefit plan that provides maternity benefits must provide at least how many hours of inpatient care for the mother and newborn infant following delivery?

a) 24 hours for vaginal birth or 96 hours for caesarean section
b) 36 hours for vaginal birth or 48 hours for caesarean section
c) 48 hours for vaginal birth or 96 hours for caesarean section
d) 72 hours for vaginal birth or 96 hours for caesarean section