Find the Orbital Speed of an Ice Cube in the Rings

Multiple Choice

Find the orbital speed of an ice cube in the rings of Saturn.The mass of Saturn is 5.68 x 10²⁶ kg,and use an orbital radius of 1.00 x 10⁵ km.(G = 6.67 × 10^-11 N ∙ m²/kg²)

A) 19.5 km/s
B) 27.5 km/s
C) 13.8 km/s
D) 9.40 km/s