How Is the Neurochemical Mechanism of Action Ibogaine Similar to That

How is the neurochemical mechanism of action ibogaine similar to that of salvinorin A?

A) Both bind to µ-opioid receptors where they exert partial antagonist activity.
B) Both bind to κ-opioid receptors where they exert partial agonist activity.
C) Both bind to 5-HT_2A receptors where they exert partial antagonist activity.
D) Both bind to 5-HT_2A receptors where they exert partial agonist activity.