Statement : Specific charge of ` alpha`-particles is twice to that of proton .
Explanation : Specific charge is given by `e//m`
A. sattement -1 si true statement -2 is ture statement =-2 si correct explantion for statement -1
B. statement -1 si true statement -2 si true statement -2 is not a correct explation for statement -1
C. statement -1 si true statemention -1
D. statement -1 and statement -2 both are false .