Solve the Polynomial Inequality $$t ( t + 3 ) ( t - 1 ) ^ { 2 } ( t + 1 ) \leq 0$$

Multiple Choice

Solve the polynomial inequality. Write the answer in interval notation. $$t ( t + 3 ) ( t - 1 ) ^ { 2 } ( t + 1 ) \leq 0$$

A) $[ - 1,1 ]$
B) $[ - 3 , - 1 ] \cup [ 0 , \infty )$
C) $( - \infty , - 3 ] \cup [ - 1,0 ] \cup \{ 1 \}$
D) $( - \infty , - 3 ] \cup [ - 1,0 ] \cup [ 1 , \infty )$