In 2008, the Cassini Spacecraft Made a Flyby of Enceladus

Multiple Choice

In 2008, the Cassini spacecraft made a flyby of Enceladus, one of the icy moons of Saturn. If the spacecraft's high resolution camera had an angular resolution of 3 arcsec, and it flew at an altitude of 23 km above Enceladus's surface, how large an object could be resolved on the surface?

A) 3 m
B) 30 cm
C) 30 km
D) 5 cm
E) 50 m