婴幼儿腹泻重度脱水伴低血容量性休克，扩容时应首选

A．2:1等张含钠液

B．2/3张含钠液

C．1/2张含钠液

D．1/3张含钠液

E．1/4张含钠液

We've done our（）to make the process as simple as possible.

A.terminal

B.utmost

C.extreme

D.supreme