The Most Likely Reason for Administering a Psychostimulant Drug Through

The most likely reason for administering a psychostimulant drug through an intravenous injection is:

A) to quickly experience the drug's reinforcing effects.
B) to reduce the symptoms of attention deficit hyperactivity disorder.
C) to reduce hunger for the treatment of weight loss.
D) due to the drug failing to absorb through other administration routes.