Determine the error $E(s),$ relative to the input $R(s).$

Select one:

a$.E(s)=\frac{s}{s^2+s}R(s)$

b$.E(s)=\frac{s}{3s-2}R(s)$

c$.E(s)=\frac{2s+2}{3s+2}R(s)$

d$.$ None of these