Determine the system type for the following unity feedback systems whose forward path transfer functions are given below.

(a) \(K G(s)=\frac{K}{(1+s)(1+10 s)(1+20 s)}\)

(b) \(K G(s)=\frac{10(s+1)}{s^{3}\left(s^{2}+5 s+5ight)}\)

(c) \(K G(s)=\frac{100}{s^{3}(s+2)^{2}}\)