Consider the First-Order Homogeneous System of Linear Differential Equations
$\psi(t)=\left(\begin{array}{l}-7 e^{-1 t} e^{-6 t} \\ -8 e^{-1 t} 0\end{array}\right)$

Multiple Choice

Consider the first-order homogeneous system of linear differential equations

Which of these is the fundamental matrix (t) for this system?

A) $\psi(t) =\left(\begin{array}{l}-7 e^{-1 t} e^{-6 t} \\ -8 e^{-1 t} 0\end{array}\right)$
B) $\Psi(t) =\left(\begin{array}{l}-7 e^{-1 /} 0 \\ -8 e^{-1 t} e^{-6 t}\end{array}\right)$
C) $\psi(t) =\left(\begin{array}{ll}7 e^{1 t} & e^{-6 t} \\ -8 e^{1 t} & 0\end{array}\right)$
D) $\psi(t) =\left(\begin{array}{ll}7 e^{1 t} & 0 \\ -8 e^{1 t} & e^{-6 t}\end{array}\right)$