For the distance between Callisto and Jupiter (r), use the semi-major axis (a) calculated in Question 6 (r=a). For the mass of Callisto, use 1.076x10²³ kg.
A) r = a / (1.076x10²³) B) r = a * (1.076x10²³) C) r = a + (1.076x10²³) D) r = a - (1.076x10²³)
