advisable

I don't think $\frac{\text{it}}{\text{A}}$ advisable that he $\frac{\text{will be assigned}}{\text{B}}$ to the job since he has $\frac{\text{no}}{\text{C}}$ experience $\frac{\text{whatsoever.}}{\text{D}}$ (全国研考,93-64)

请指出并分析正确答案。