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A charged particle enters into a region which offers a resistance against its motion and uniform magnetic field exists in the region. The particle traces a spiral path as shown in the figure. Which of the following statements is correct? 

A)  Component of the magnetic field in the plane of spiral is zero. 

B)  Particle enters in the region at Q.

C)  If the magnetic field is outward then the particle is positively charged.

D)  All of the above.