Two Particles Move Through a Uniform Magnetic Field That Is

Two particles move through a uniform magnetic field that is directed out of the plane of the page. The figure shows the paths taken by the two particles as they move through the field. The particles are not subject to any other forces or fields. Which one of the following statements concerning these particles is true?

A) The particles may both be neutral.
B) Particle 1 is positively charged; 2 is negative.
C) Particle 1 is positively charged; 2 is positive.
D) Particle 1 is negatively charged; 2 is negative.
E) Particle 1 is negatively charged; 2 is positive.