Let a Denote the Area Enclosed by the Graph $f ( x ) = 10 - x,$

Multiple Choice

Let A denote the area enclosed by the graph $f ( x ) = 10 - x,$ the x-axis, and the lines $x = 3$ and $x = 5$ . Graphing the region and using plane geometry, we can find that A is

A) 8
B) 10
C) 11
D) 12
E) 14