关于酶法测定体液电解质，错误的是（）

A.精密度和特异性不如火焰光度方法

B.黄疸对酶法测定体液电解质有干扰

C.溶血对酶法测定体液电解质有干扰

D.脂血对酶法测定体液电解质无干扰

E.脂血对酶法测定体液电解质有严重干扰

—  I hear that you have made a new market plan.  

— Yes, but what puzzles me now is how to ______the plan. [ ]

A. carry out          

B. pull out        

C. put out        

D. work out