Which of the Following Is (Are) True Of $f ( x ) = x ^ { 3 } - 3 x ^ { 2 } + 3 x ?$

Multiple Choice

Which of the following is (are) true of $f ( x ) = x ^ { 3 } - 3 x ^ { 2 } + 3 x ?$
(I) f increasing on (1, ?)
(II) (1, 1) is a relative extreme point
(III) (1, 1) is an inflection point
(IV) f is concave up on (-?, 1)

A) II, III, and IV
B) I and III
C) I, II, and IV
D) I, II, and III
E) all of these