Which Was NOT a Voyager Discovery About the Rings of Saturn

Multiple Choice

Which was NOT a Voyager discovery about the rings of Saturn?

A) There are hundreds of smaller moons imbedded in them, creating the gaps.
B) They have dark spokes that defy gravity.
C) The F ring particles are herded by two shepherd moons.
D) The E ring may have been made by volcanic eruptions from Enceladus.
E) They are made of tens of thousands of narrow ringlets.