To make a line meet the Heaviside condition one of the four primary constants needs to be adjusted and the question is which one. "G" could be increased, but this is highly undesirable since increasing "G" will increase the loss. Decreasing "R" is sending the loss in the right direction, but this is still not usually a satisfactory solution. "R" must be decreased by a large fraction and to do this the conductor cross-sections must be increased dramatically. This not only makes the cable much more bulky but also adds significantly to the amount of copper (or other metal) being used and hence the cost. Decreasing the capacitance also makes the cable more bulky (since the insulation must now be thicker) but is not so costly as increasing the copper content. This leaves increasing "L" which is the usual solution adopted.