Use the Alternative Form of the Derivative to Find the Derivative

Multiple Choice

Use the alternative form of the derivative to find the derivative of the function $$f ( x ) = x ^ { 2 } - 9 \text { at } x = 5$$

A) $f ^ { t } ( 5 ) = 1$
B) $f ^ { t } ( 5 ) = 250$
C) $f ^ { t } ( 5 ) = 2$
D) $f ^ {t} ( 5 ) = 125$
E) $f ^ { t } ( 5 ) = 10$