Which of the Following Experiments Helped to Determine That Most

Multiple Choice

Which of the following experiments helped to determine that most of an atom is actually empty space except for a very small positive core?

A) J.J. Thompson's cathode ray deflection experiments
B) R. Millikan's oil drop experiments
C) E. Rutherford's gold foil experiments
D) Avogadro's number experiments
E) Franklin's kite experiments