Consider the following statements about the Janani Suraksha Yojana (JSY):

1. JSY is implemented independently by State Health Departments, without being routed through any central health mission.

2. JSY's principal objective is to reduce maternal and neonatal mortality by promoting institutional delivery among poor pregnant women.

3. JSY combines cash assistance with delivery and post-delivery care for the mother.

4. JSY guarantees free healthcare facilities for the infant for its entire first year of life.

How many of the statements given above are correct?