Ans: A
$\begin{array}{cl}
& 12\text{B}00\text{CD}000000\text{E}_{16} \\
= & 1 \times 16^{13} +2\times 16^{12} +11\times 16^{11} +12 \times 16^8+13 \times 16^7 +14 \\
= & 1 \times (4^2)^{13} +2\times (4^2)^{12} +11\times (4^2)^{11} +12 \times (4^2)^8+13 \times (4^2)^7 +14 \\
= & 1 \times 4^{26} +2 \times 4^{24} +11\times 4^{22} +12\times 4^{16} +13 \times 4^{14} + 14 \\
= & (1\times 4^4 +2\times 4^2 +11) \times 4^{22} +(12 \times 4^2 +13) \times 4^{14} +14 \\
= & 299 \times 4^{22} +205 \times 4^{14} + 14
\end{array}$
