What Was the Main Difference Between the Time Capsules Carried

What was the main difference between the time capsules carried on the Pioneer probes and the time capsules carried on the Voyager probes?

A) no difference, the time capsules were identical
B) the time capsule on Voyager contained a record with video and audio messages
C) the time capsule on Pioneer contained a record with video and audio messages
D) the time capsule on Voyager contained video, but no audio