The nurse is caring for a primigravida client who delivered vaginally 48-hours ago. The client's laboratory results are: haemoglobin 12.5 g/dL (125 g/L), hematocrit 34% (0.34 volume fraction), hepatitis B surface antigen negative, rubella non-immune, group B Streptococcus positive. Which prescription should the nurse prepare to administer? Reference Range Hemoglobin [Pregnant female: greater than 11 g/dL (greater than 110 g/L)] Hematocrit [Pregnant female: greater than 33% (greater than 0.33 volume fraction)] Hepatitis B surface antigen [Negative] Rubella [Immune] Group B Streptococcus [Negative]