Two spheres A and B of radius 4 cm and 6 cm are given charges of `80 muC and 40 muC`, respectively. If they are connected by a fine wire, then the amount of charge flowing from one to the other is
A. `20 muC` from A to B
B. `20 muC` from B to A
C. `32 muC` from B to A
D. `32 muC` from A to B
