According to the Fundamental Theorem of Algebra, how many roots exist for the polynomial function?
$(9 x+7)(4 x+1)(3 x+4)=0$
A9 roots
B4 roots
C3 roots
D1 root
$(9 x+7)(4 x+1)(3 x+4)=0$
A9 roots
B4 roots
C3 roots
D1 root