question_answer

The term independent of x in the expansion of \[{{\left( \frac{x+1}{{{X}^{2/3}}-{{x}^{1/3}}+1}-\frac{x-1}{x-{{x}^{1/2}}} \right)}^{10}}\]is

A)  \[{{T}_{5}}=210\]   

B)  \[{{T}_{5}}=-210\]     

C)  \[{{T}_{4}}=180\]       

D)  \[{{T}_{4}}=-180\]