$\left| \begin{array} { l l l } 3 & 7 & 4 \\4 & 3 & 2 \\2 & 5 & 1\end{array} \right|$

Multiple Choice

$\left| \begin{array} { l l l } 3 & 7 & 4 \\4 & 3 & 2 \\2 & 5 & 1\end{array} \right|$

A) -21
B) -35
C) 35
D) 199