Statement 1: If a proton and an `alpha`-particle enter a uniform magnetic field perpendicularly with the same speed, the time period of revolution of `alpha`-particle is double than that of proton.
Statement 2: In a magnetic field, the period of revolution of a charged particle is directly proportional to the mass of the particle and inversely proprotional to the charge of particle.
A. If both statement 1 and statement 2 are ture, statement 2 is the correct explanation of statement 1.
B. If both statement 1 and statement 2 are ture, statement 2 is not the correct explanation of statement 1.
C. If statement 1 is true, statement 2 is false.
D. If statement 1 is false, statement 2 is true.
