Ans: C
$\begin{array}{cl}
& 1234^{3235} \\
\approx & 1000^{3333} \\
= & (10^3)^{3333} \\
= & 10^{9999} \\
\approx & 10^{10~000}
\end{array}$
$\begin{array}{cl}
& 1234^{3235} \\
\approx & 1000^{3333} \\
= & (10^3)^{3333} \\
= & 10^{9999} \\
\approx & 10^{10~000}
\end{array}$
