【单选题】

配制2:1等张含钠液120ml需
A．0.9%NaCl80ml,5%NaHCO340ml

B．0.9%NaCl80ml,5%，NaHCaO35ml，10%GS35ml
C．0.9%NaCl$0ml,10%GS40ml
D．0.9%NaCl40ml,5%NaCO380ml
E．0.9%NaCl80ml,5%NaHCO310ml，10%C,S30ml