In an experiment three microscopic latex spheres are sprayed into a chamber . . .

In an experiment three microscopic latex spheres are sprayed into a chamber and become charged with charges +3e, +5e and -3e respectively. All the three spheres came in contact simultaneously for a moment and got separated. Which one of the following are possible values for the final charge on the spheres? 

a) +5e, -4e, +5e

b) +6e, +6e, -7e

c) -4e, +3.5e, +5.5e

d) +5e, -8e, +7e

Video Solution : 



Hint : Use the concept of law of conservation of charges and the quantisation of charge.