If an electric current of 8A is split into three branches, forming a parallel combination, and the lengths of the wires in these branches are in the ratio 3:4:5, while their diameters are in the ratio 2:3:4, then what is the current flowing through first branch? Assume that all the wires are made of the same material. A ) 448A B ) 0.60A C) 154A D) 250A E) 790A