The liquid-phase, constant density, isothermal reaction (A B) is carried out in a flow reactor system. The reaction is first-order in A and first-order in B, with k = 0.05 Li/mol-min. A feed stream (C_Ao = 2.0 mol/Li and C_Bo = 0) is to be processed at a rate of 200 Li/min to achieve 90% conversion of A, The following configurations are considered: (a) CSTR-PFR combination (which one should come first) find the minimum total volume set-up. (b) A set of equal-sized CSTRs (give the total reactor volume) (c) Can we use a single PFR for this reaction? Why not?