Questions MCQ #!#Moving charge in external magnetic fiedl

Toroid |Magnetic force on moving charge |Difference between magnetic force and electric force |Note and questions

A: The magnetic field always accelerates a moving charge if the moving charge cuts the field lines. R: When a moving charge cuts the magnetic field lines, the magnetic force on the charge is always non zero.

In the above question, if an external magnetic field is applied, then the answer is :