At a contest with \(1,500\) participants, \(1/2\) of the people are aged \(8\) to \(12\). Next year, the number of people aged \(8\) to \(12\) will increase by \(1/3\). After this change, what percentage of the total \(1,500\) people will the \(8\)- to \(12\)-year-olds represent?

A. \(33\%\)
B. \(40\%\)
C. \(50\%\)
D. \(55\%\)
E. \(66 \,2/3\%\)

The OA is E