Which of the following statements is/are correct regarding Essential Obstetric Care under the Reproductive, Maternal, Newborn and Child Health care Programme?
1. Early registration of pregnancy
2. Provision of first referral units
3. Provision of safe delivery practices
4. Provision of at least four postnatal checkups
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2, 3 and 4