Which Is the Correct Definition of the Perinatal Mortality Rate

Which is the correct definition of the perinatal mortality rate?

A) Number of live births in one year per 1000 population
B) Number of deaths of infants under one year of age per 1000 live births
C) Number of deaths of infants under 28 days of age per 1000 live births
D) Number of stillbirths and neonatal deaths per 1000 live births