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Which of the following categorical response variables matches the binary matrix coding below:
\begin{align*}\begin{array}{ccc} A & B & C\\ 1 & 0 & 0\\ 1 & 0 & 0\\ 0 & 1 & 0\\ 0 & 0 & 1\\ 0 & 0 & 1\\ 1 & 0 & 0\\\end{array}\end{align*}