Examination of the placenta that was just delivered detected a defect 2x3 cm in size. There is no bleeding. What would be the further tactics of the patient's management?

Answer options

1. External uterine massage
2. Extirpation of the uterus
3. Manual revision of the uterine cavity
4. Instrumental revision of the uterine cavity
5. Prerscription of utcrotonics