Let a Denote the Area Enclosed by the Graph $f ( x ) = | x | \text {, }$

Multiple Choice

Let A denote the area enclosed by the graph $f ( x ) = | x | \text {, }$ the x-axis, and the lines $x = - 1$ and $x = 1$ . Graphing the region and using plane geometry, we can find that A is

A) 0.5
B) 1
C) 1.5
D) 2
E) 2.5