Task: Question Answering
Input (English): Question: For the given equation x9+5x8−x3+7x+2=0,x9+5x8−x3+7x+2=0, how many maximum real roots are possible?

 Option A: 3

 Option B: 7

 Option C: 4

 Option D: 0

 Option E: 1
Output (English): Option C