The reaction A + B + 2C takes place in an unsteady state flow reactor. The feed is in equimolar proportion. Which of the following sets of equations gives the correct set of expressions? Select the correct answer where all the expressions are correct. i) DNA dt V FBO FA - S rAdv dN FBO - FB dt dNC -Fc + 2 dt radV = 25 rAdv = ' NA ii) dt = FAO FA+S rAdV = dNB FA rAdV dt dc -Fc dt rAdV iii) dNA = dt FB + AdV = dNg dt Fao Fs-S** -ke-21'dev = d. 25 Fao FA + S radV Ex-P + *nav de Petfredv= Fbo FA - S rady = Foo - P - dv Ec+frcave V Fc + = dNC dt iv) = NA dt dN dt -Fc rcdV = dt v) None of the above