Light rays from a very distant source travel along the \[+x\] direction. Two identical thin lenses with focal length \[f>0\] and their optical axis along x, sit, one at \[x=0\] and the other at \[x=d

• A. \[d+\frac{f(f-d)}{2f-d}\]
• B. \[d-\frac{f(f-d)}{d}\]
• C. \[d+\frac{f(f-d)}{2(f+d)}\]
• D. \[d+\frac{{{f}^{2}}}{2(f-d)}\]