Multiply; Then Use Fundamental Identities to Simplify the Expression Below $( \tan x + 1 ) ^ { 2 }$

Multiple Choice

Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not equivalent.
$( \tan x + 1 ) ^ { 2 }$

A) $\tan ^ { 2 } x + 1$
B) $\sec ^ { 2 } x + 2 \tan x$
C) $\frac { 1 + 2 \sin x \cos x } { \cos ^ { 2 } x }$
D) $\tan ^ { 2 } x + 2 \tan x + 1$
E) $\sec ^ { 2 } x ( 1 + 2 \sin x \cos x )$