Determine the Intervals for Which $4 x ( x - 5 )$

Multiple Choice

Determine the intervals for which $4 x ( x - 5 )$ is entirely negative and entirely positive.

A) negative: $( 0,5 )$ positive: $( - \infty , 0 ) , ( 5 , \infty )$
B) negative: $( - \infty , - 5 ) , ( 5 , \infty )$ positive: $( - 5,5 )$
C) negative: $( - \infty , 0 ) , ( 1.25 , \infty )$ positive: $( 0,1.25 )$
D) negative: $( 0,1.25 )$ positive: $( - \infty , 0 ) , ( 1.25 , \infty )$
E) negative: $( - \infty , 0 ) , ( 5 , \infty )$ positive: $( 0,5 )$