8-9. please help

Use the following information to answer the next two questions Observation The value of q/m for a cathode-ray particle is about 1800 times greater than the value of q/m for a hydrogen ion. Conclusions That May Be Supported by the Observation The charge on a cathode-ray particle is 1800 times greater than the charge on a hydrogen ion. The charge on a cathode-ray particle is of the charge on a hydrogen lon. The mass of a cathode-ray particle is 1800 times greater than the mass of a hydrogen ion. IV The mass of a cathode-ray particle is of the mass of a hydrogen ion 8. The observation supports conclusions Il and Ill O I and IV O II and IV O I and Ill 9. Which of the following pairs of scientists conducted experiments that led to the determination of the mass of an electron? Planck and Einstein Thomson and Millikan Rutherford and Bohr ) Compton and de Broglie