Which of the Experiments Listed Below Did Not Provide the Information

Which of the experiments listed below did not provide the information stated about the nature of the atom?

A) The Rutherford experiment proved that the Thomson "plum pudding" model of the atom was essentially correct.
B) The Rutherford experiment determined the charge on the nucleus.
C) The cathode-ray tube proved that electrons have a negative charge.
D) Millikan's oil-drop experiment showed that the charge on any particle was a simple multiple of the charge on the electron.