problems 1&2 please

Two phases a and Beach contain a solute "A" These phases are put in contact and allowed to reach equilibrium via mass transfer. The concentration profile of A is shown with bold lines: bulk concentration of A in a is lower than bulk concentration of A in B. interphase bulk bulk concentration a B concentration Given this information: 1. When will the mass transfer between a and B stop? Select as many as applicable a. When the bulk concentration of A is the same in a and B. b. When the bulk concentration of A in a is the same as the interface concentration in a. C. When the interface concentration of A in a is the same as the interface concentration in B. d. Other: 2. For the system shown, mass transfer of A between the two phases is as follows: a. From phase a to . b. From phase B to a C. The two phases are already in equilibrium, i.e. A is not transferred between the phases. d. Not enough information is provided to determine the direction (or if) A is transferred