Read the passage from a princess of mars.

while sola was away i took occasion to examine more minutely the room in which i found myself captive. the mural painting depicted scenes of rare and wonderful beauty; mountains, rivers, lake, ocean, meadow, trees and flowers, winding roadways, sun-kissed gardens—scenes which might have portrayed earthly views but for the different colorings of the vegetation. the work had evidently been wrought by a master hand, so subtle the atmosphere, so perfect the technique; yet nowhere was there a representation of a living animal, either human or brute, by which i could guess at the likeness of these other and perhaps extinct denizens of mars.

based on the passage, the reader can conclude that a princess of mars is a fantasy because it

is told by a narrator.
features a prisoner.
analyzes a piece of art.
is set on another planet.