Which of the following statements is not the result of the cathode ray discharge tube experiment?

• A
  In the absence of electric or magnetic field,the cathode rays travel in a straight line.
• B
  In the presence of electric or magnetic field,the behaviour of cathode rays is similar to that expected from negatively charged particles.
• C
  In the presence of electric and magnetic field,the cathode rays travel in a straight line.
• D
  The cathode rays start from the cathode and move toward the anode.