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The following are the steps involved in finding the area of the triangle with vertices \( (2,3),(4,7) \)
(W) and \( (8,5) \). Arrange them in the sequential order from first to last.
(A) \( \frac{1}{2}|(-2) 2-(-4)(-4)|=\frac{1}{2}|-20|=10 \) sq. units
(B) Area of triangle \( =\frac{1}{2}\left|\begin{array}{ll}x_{1}-x_{2} & x_{2}-x_{3} \\ y_{1}-y_{2} & y_{2}-y_{3}\end{array}\right| \)
(C) Let \( \left(x_{1}, y_{1}\right)=(2,3),\left(x_{2}, y_{2}\right)=(4,7) \) and \( \left(x_{3}\right. \), \( \left.y_{3}\right)=(8,5) \)
(D) Area of triangle \( =\frac{1}{2}\left|\begin{array}{ll}2-4 & 4-8 \\ 3-7 & 7-5\end{array}\right| \)
(a) \( \mathrm{ABCD} \)
(b) CBDA
(c) CBAD
(d) None of these
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