Consider the following statements.I. Canal rays are simply the charged gaseous ions.II. Charge to mass ratio of these particles is found to depend on the gas from which these originate. III. Some of the positively charged particles carry a multiple of the fundamental unit of electrical charge.IV. Behaviour of canal rays in the electrical or magnetic field is opposite to that observed for cathode rays or electron.Which of the above mentioned statements are correct?

characteristics of canal rays are as,I. unlike cathode rays, the positively charged particles depend upon the nature of gas present in the cathode ray tube. These are simply the positively charged gaseous ions.II. The charge to mass ratio of the particles is found to depend on the gas from which these originate.III. Some of the positively charged particles carry a multiple of the fundamental unit of electrical charge.IV. The behaviour of these particles in the magnetic or electrical field is opposite to that observed for electron or cathode rays.