Guddu if I wear a old female was brought to the emergency with fever, headache and confusion. A provisional diagnosis of bacteria meningitis was made. The baby developed in severe allergic reaction to to penicillin around 6 months back. She was admitted and intravenous antibiotics we're staed . Few days later her investuinvest revealed as Hemoglobin 6.0g/L Erythrocyte count 1.2x10^6/cubic mm Leukocyte count 1500/cubic mm Which of the following is the most likely drug responsible for the above finding