Find the Real Zeros of the Function, State Their Multiplicities $f ( x ) = x ^ { 3 } + x ^ { 2 } - 20 x$

Multiple Choice

Find the real zeros of the function, state their multiplicities if it is a number other than 1.
- $f ( x ) = x ^ { 3 } + x ^ { 2 } - 20 x$

A) x = 3, x = 4
B) x = 0, x = 3, x = 4
C) x = 0, x = - 5, x = 4
D) x = - 5, x = 4