Three CSTRs (each of volume = V) and a single CSTR (volume = 3V) are available for a liquid-phase, first-order reaction, A → B, where k_A = 0075 min^-1, and C_A0, = 0.25 mol/L. 

(a) Would the single CSTR or the three CSTRs arranged in series give a higher conversion of A? Justify your answer  numerically.
(b) If all four reactors are used, how should they be arranged to maximize the overall conversion?