In the r state the activity will be high, while in the T state the activity will be low. Now, what's the difference between phosphorase A and phosphorase B? Well, phosphorlase A, the equilibrium of phosphorase A exists predominantly on the r side, while the equilibrium for the phosphorase B molecule exists predominantly in the T state. So what that means is at equilibrium we're going to have much more of the R state than the T state. On the other hand, for this particular case at equilibrium we're going to have much more of the inactive T state than the active R state. Now, how do we go from phosphorase B to phosphorlase A?