8. The figure shows a flowchart for computing $\frac { 1 } { 2 + \frac { 1 } { 2 + \frac { 1 } { 2 } } }$ . The blank box should be filled with\\
\includegraphics[max width=\textwidth, alt={}, center]{d8be0475-36cf-44ff-8fac-6cb6982f2aaf-02_677_417_1907_824}\\
A. $A = \frac { 1 } { 2 + A }$\\
B. $A = 2 + \frac { 1 } { A }$\\
C. $A = \frac { 1 } { 1 + 2 A }$\\
D. $A = 1 + \frac { 1 } { 2 A }$