David Alexander has compiled the following table of six items in inventory at Angelo Products, along with the unit cost and the annual demand in units: Use ABC analysis to determine which item(s) should be carefully controlled using a quantitative inventory technique and which item(s)should not be closely controlled.

\begin{tabular}{|l|c|c|} \hline \begin{tabular}{l} IDENTIFICATION \\ CODE \end{tabular} & \begin{tabular}{l} UNIT COST \\ (\$) \end{tabular} & \begin{tabular}{l} ANNUAL DEMAND \\ (UNITS) \end{tabular} \\ \hline XX1 & 5.84 & 1,200 \\ \hline B66 & 5.40 & 1,110 \\ \hline 3CPO & 74.54 & 896 \\ \hline 33CP & 2.00 & 1,104 \\ \hline R2D2 & 2.08 & 1,110 \\ \hline RMS & 961 \\ \hline \end{tabular}