What is the recommendation regarding Intrapartum antibiotic prophylaxis ( IAP) in women colonised with Group B streptococcus, with Intrauterine fetal demise ?

1. IAP is not needed

2. IAP is given till delivery of the baby

3. IAP is started before membrane rupture, and then given till 6 hours after delivery

4. Oral ampicillin is given to prevent GBS infection