A laboring client who is positive for Group B Streptococcus is given an initial dose of ampicillin (Omipen) 2 g at 9 am. According to established guidelines for intrapartum management of this client, the next dose should be:__________1. 2 g given at 10 am2. 1 g given at 11 am3. 2 g given at noon4. 1 g given at 1 pm