Which of the following statements are correct ?

A) Electric monopoles do not exist whereas magnetic monopoles exist.
B) Magnetic field lines due to a solenoid at its ends and outside are completely straight and confined.
C) Magnetic field lines are completely confined within a toroid.
D) Magnetic field lines inside a bar magnet are not parallel.
E) $x=-1$  is the condition for a perfect diamagnetic material, where x is its magnetic susceptibility 
Choose the correct answer from the options given below: