Find the Zeros and Their Multiplicities $$f ( x ) = 20 x ^ { 3 } - 47 x ^ { 2 } + 11 x + 6$$

Multiple Choice

Find the zeros and their multiplicities. Consider using Descartes' rule of signs and the upper and lower
bound theorem to limit your search for rational zeros.
- $$f ( x ) = 20 x ^ { 3 } - 47 x ^ { 2 } + 11 x + 6$$

A) $1 , - 3$ , and $- 2$ (each with multiplicity 1 )
B) $- \frac { 1 } { 4 } , \frac { 3 } { 5 }$ , and 2 (each with multiplicity 1 )
C) $\frac { 1 } { 4 } , - \frac { 3 } { 5 }$ , and $- 2$ (each with multiplicity 1 $)$
D) $- 1,3$ , and 2 (each with multiplicity 1)