When the steamboat approaches Kurtz's station, the savages cry loudly and forlornly. Marlow claims that, "The glimpse of the steamboat had for some reason filled those savages with unrestrained grief."
What can be inferred from the preceding claim?
The savages are worried that they will be driven from their village.
The savages do not want Kurtz to leave.
The savages are protecting their ivory because it is their only source of income.
The savages are afraid of the "magical" steamboat.
The savages are grieving because they do not have the easy life of the shipmen.