$\text { Find the derivative of the following function } f ( x ) = - 3 x ^ { 2 } + 6 x - 8 \text { using the limiting }$

Multiple Choice

$\text { Find the derivative of the following function } f ( x ) = - 3 x ^ { 2 } + 6 x - 8 \text { using the limiting }$ process.

A) $f ^ { t } ( x ) = - 6 x + 6$
B) $f ^ { t } ( x ) = - 3 x + 6$
C) $f ^ { t} ( x ) = - 6 x + 6 x - 8$
D) $f ^ { t } ( x ) = - 3 x - 6$
E) $f ^ { t } ( x ) = - 6 x - 6$