Identify Which of the Twelve Basic Functions Listed Below Fit $( - \infty , 0 )$

Multiple Choice

Identify which of the twelve basic functions listed below fit the description given.
-The four functions that are increasing on the interval $( - \infty , 0 )$

A) $y = x , y = x ^ { 3 } , y = x ^ { 2 } , y = e ^ { x }$
B) $y = x , y = x ^ { 3 } , y = e ^ { x } , y = \frac { 1 } { 1 + e ^ { - x } }$
C) $y = x , y = x ^ { 3 } , y = x ^ { 2 } , y = \frac { 1 } { 1 + e ^ { - x } }$
D) $y = x ^ { 3 } , y = \frac { 1 } { x } , y = | x | , y = x$