Find the Real Zeros of the Function, State Their Multiplicities $f ( x ) = 5 ( x + 3 ) ( x + 7 ) ^ { 4 }$

Multiple Choice

Find the real zeros of the function, state their multiplicities if it is a number other than 1.
- $f ( x ) = 5 ( x + 3 ) ( x + 7 ) ^ { 4 }$

A) x = 3, x = 4
B) x = -3, x = 4
C) $\begin{array} { l } x = 3 \\x = 7 , \text { multiplicity: } 4 \\x = 4\end{array}$
D) $\begin{array} { l } x = - 3 \\x = - 7 , \text { multiplicity: } 4\end{array}$