Find All the Rational Zeros of the Function $f ( x ) = x ^ { 5 } - 5 x ^ { 4 } + 11 x ^ { 3 } - 23 x ^ { 2 } + 28 x - 12$

Multiple Choice

Find all the rational zeros of the function $f ( x ) = x ^ { 5 } - 5 x ^ { 4 } + 11 x ^ { 3 } - 23 x ^ { 2 } + 28 x - 12$ .

A) ​x = -2,2,1,3
B) ​x = 3,1
C) ​x = -2,-1,-3
D) ​x = -1,-2
E) x = -2,2,-1,1,-3