Which of the following sets of characteristics describe what we know about the dwarf planets? orbits the sun, has sufficient mass to assume a nearly round shape, and lacks the gravity to clear items near its orbit. has sufficient mass to maintain a round shape, orbits the sun, and has enough gravity to clear items near its orbit. has sufficient mass to maintain a round shape, is not a satellite of any other object, and has enough gravity to clear items near its orbit. orbits the sun, is not a satellite of any other object, and has enough gravity to clear items near its orbit.