Use Descartes's Rule of Signs to Determine the Possible Number $$f ( x ) = 7 x ^ { 4 } - 8 x ^ { 3 } + x ^ { 2 } - 3.5 x + 16$$

Multiple Choice

Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given
function.
- $$f ( x ) = 7 x ^ { 4 } - 8 x ^ { 3 } + x ^ { 2 } - 3.5 x + 16$$

A) 4,2 or 0 positive zeros, no negative zeros
B) 4 or 2 positive zeros, no negative zeros
C) 4,2 or 0 positive zeros, 1 negative zeros
D) 4 positive zeros, no negative zeros