If the value of the determinant \[\left| \begin{matrix} a & 1 & 1 \\ 1 & b & 1 \\ 1 & 1 & c \\ \end{matrix} \right|\] is positive, then (a, b, c > 0)

If the value of the determinant \[\left| \begin{matrix} a & 1 & 1

1.	If the value of the determinant \[\left\| \begin{matrix} a & 1 & 1 \\ 1 & b & 1 \\ 1 & 1 & c \\ \end{matrix} \right\|\] is positive, then (a, b, c > 0)
A.	\[abc>1\]
B.	\[abc>-\,8\]
C.	\[abc<-\,8\]
D.	\[abc>-\,2\]
Answer» C. \[abc<-\,8\]

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If the value of the determinant \[\left| \begin{matrix} a & 1 & 1 \\ 1 & b & 1 \\ 1 & 1 & c \\ \end{matrix} \right|\] is positive, then (a, b, c > 0)

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