Atomoxetine (Strattera) has recently been approved for the treatment of ADHD. It differs from traditional psychostimulant medications in what dimension(s)?

a. it is more selective in its actions, primarily selectively inhibiting norepinephrine reuptake.
b. in contrast to psychostimulants, it has no abuse liability
c. its efficacy is greater than that shown with psychostimulants
d. only a and b above

d