Use Descartes' Rule of Signs to Determine the Possible Number $$P ( x ) = - 5 x ^ { 4 } + 4 x ^ { 3 } - 7 x ^ { 2 } + 5 x - 4$$

Multiple Choice

Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative
real zeros for the function.
- $$P ( x ) = - 5 x ^ { 4 } + 4 x ^ { 3 } - 7 x ^ { 2 } + 5 x - 4$$

A) 0 , 2, or 4 positive; 0 , 2 , or 4 negative
B) 0 or 2 positive; 0,2 , or 4 negative
C) 0 or 2 positive; 0 negative
D) 0,2 , or 4 positive; 0 negative