Chọn câu đúng. Nếu a/b = c/d thì: (5a + 3b)/(5a - 3b) = (5c + 3d)/(5c + 3d

A. $\frac{5a+3b}{5a-3b}=\frac{5c+3d}{5c+3d}$

B. $\frac{5a-3b}{5a-3b}=\frac{5c+3d}{5c-3d}$

C. $\frac{5a-3b}{5a-3b}=\frac{5c+3d}{5c-3d}$

D. $\frac{5a+3b}{5a-3b}=\frac{5c+3d}{5c-3d}$