Which One of the Following Points Is a Solution to the System

Multiple Choice

Which one of the following points is a solution to the system? $$\begin{array} { l } - 8 x - 8 y - 5 z = - 6 \\7 x - 8 y - 9 z = 17 \\9 x + 2 y + 6 z = - 1\end{array}$$

A) $( - 4,1,6 )$
B) $( 1,1 , - 2 )$
C) $( 1,6 , - 10 )$
D) All three points are solutions to the system.