What Was the Most Surprising Discovery of the Galileo Probe

Multiple Choice

What was the most surprising discovery of the Galileo probe when it penetrated the atmosphere of Jupiter?

A) It measured only traces of the NH₃,NH₄SH,and water vapor cloud layers that are easily measured spectroscopically from Earth.
B) It found no evidence of hydrogen at all in the atmosphere of Jupiter.
C) It hit a hard surface just under the cloud layers,contrary to our understanding of Jupiter's atmospheric structure.
D) It measured vast quantities of invisible water vapor above the cloud layers.