Cho a > b > 0. Chọn câu đúng? (a + b)^2/(a^2 - b^2) = (a^2 + b^2)/(a - b)^2

A. $\frac{{\text{(a}+\text{b)}}^{\text{2}}}{{\text{a}}^{\text{2}}-{\text{b}}^{\text{2}}}=\frac{{\text{a}}^{\text{2}}+{\text{b}}^{\text{2}}}{{\text{(a}-\text{b)}}^{\text{2}}}$

B. $\frac{{\text{(a}+\text{b)}}^{\text{2}}}{{\text{a}}^{\text{2}}-{\text{b}}^{\text{2}}}>\text{2}\frac{{\text{a}}^{\text{2}}+{\text{b}}^{\text{2}}}{{\text{(a}-\text{b)}}^{\text{2}}}$

C. $\frac{{\text{(a}+\text{b)}}^{\text{2}}}{{\text{a}}^{\text{2}}-{\text{b}}^{\text{2}}}>\frac{{\text{a}}^{\text{2}}+{\text{b}}^{\text{2}}}{{\text{(a}-\text{b)}}^{\text{2}}}$

D. $\frac{{\text{(a}+\text{b)}}^{\text{2}}}{{\text{a}}^{\text{2}}-{\text{b}}^{\text{2}}}<\frac{{\text{a}}^{\text{2}}+{\text{b}}^{\text{2}}}{{\text{(a}-\text{b)}}^{\text{2}}}$