Determine Which of the Following Is Not True for the Graph

Multiple Choice

Determine which of the following is not true for the graph of $f ( x ) = x ^ { 3 } - 6 x ^ { 2 } + 9 x$

A) ƒ is continuous on $( - \infty , \infty )$
B) ƒ has a relative maximum at x = 1.
C) ƒ has a relative minimum at x = 3.
D) ƒ has a point of inflection at x = 2.
E) ƒ is concave downward on $( 2 , \infty ) .$