The Linear Approximation $L ( x )$ To $f ( x ) = \tan x$

Multiple Choice

The linear approximation $L ( x )$ to $f ( x ) = \tan x$ near $x _ { 0 } = \frac { \pi } { 4 }$ is

A) $1 + 2 \left( x - \frac { \pi } { 4 } \right)$
B) $1 - 2 \left( x - \frac { \pi } { 4 } \right)$
C) $1 + \left( x - \frac { \pi } { 4 } \right)$
D) $1 - \left( x - \frac { \pi } { 4 } \right)$
E) $- 1 + 2 \left( x - \frac { \pi } { 4 } \right)$