Two proteins A and B are being fractionated from an aqueous feed solution by ultrafiltration. At the cross-flow velocity being used the mass transfer coefficient of A is 4106m/s while that of B is 8106m/s. The fractionation is being carried out at a constant permeate flux of 1106m/s. The permeate flux and mass transfer coefficients combination is known to result in intrinsic sieving coefficients of 0.1 and 0.5 for A and B respectively. If we assume that each protein behaves independently of the other, predict the selectivity of separation. If the concentrations of A and B in the solution are 1kg/m3 and 3kg/m3 respectively, predict the composition of the permeate