A 60-year-old lady underwent abdominal surgery and on the 4th post-operative day was diagnosed to have Systemic Inflammatory Response Syndrome (SIRS). What are the features of SIRS?
1. Normal body temperature and normal respiratory rate
2. WBC count > 12 × 109/L or < 4 × 109/L
3. Respiratory rate > 20 breaths/minute and heart rate > 90 beats/minute
4. Respiratory rate < 10 breaths/minute
Select the correct answer using the codes given below: