Two conducting spheres, A and B, are initially surrounded by air (insulator) and supported by insulating rods. Sphere A has a charge ( qₐ,i = q ) and sphere B has a charge ( qb,i = 0 ). The spheres are brought together until they touch. They are then separated once more. What is the final charge on the spheres?
a. ( qₐ,f = 0 ), ( qb,f = q )
b. ( qₐ,f = q ), ( qb,f = 0 )
c. ( qₐ,f = q/2 ), ( qb,f = q/2 )
d. ( qₐ,f = q ), ( qb,f = -q )