Các phân thức

Câu hỏi: Các phân thức $\frac{\text{3x}+\text{1}}{{\text{(x}-\text{2)}}^{\text{2}}}\text{,}\frac{\text{2x}-\text{1}}{{\text{x}}^{\text{2}}+\text{4x}+\text{4}}\text{,}\frac{\text{1}}{\text{2}-\text{x}}$  có mẫu chung là?

A. $\left(x - 2\right){\left(x + 2\right)}^2$

B. $(2 - x){\left(x - 2\right)}^2{\left(x + 2\right)}^2$

C. ${\left(x - 2\right)}^2{\left(x + 2\right)}^2$

D. ${\left(x - 2\right)}^2$