which of the following statements about jupiter's magnetosphere is true? a. its source is a zone directly above the planet's cloudtops b. the magnetic field is 20 to 30 times weaker than the earth's c. it is tilted so that it is almost perpendicular (at 90 degrees) to the equator of jupiter d. it completely covers the inner satellites of jupiter and is one of the largest structures in the solar system e. it is easily visible to the human eye with a small telescope