Oral re-hydrate solution (ORS) is one of the following.. sod. chloride,pot. citrate, sod. citrate & glucose

Oral re-hydrate solution (ORS) is one of the following:
a- sod. citrate,pot. chloride & glucose
b- sod. citrate,pot. chloride & sod. chloride
c- sod. chloride,pot. citrate, sod. citrate & glucose
d- sod. chloride,pot. chloride, sod. bicarbonate & citric acid.