In transmission of bulk electrical power, high voltage offers :
Low cost of switching
Small size of conductors
Small towers
Small risk of danger
Small size of conductors
As for bulk power (dc) transmission
Total power loss in transmission line :
Volume of conducting material
From equation (iii) and (iv) we have
and volume 
Hence, for 
size of conducting
material decreases. It also decrease the volume of conducting material.
Hence, the correct option is
(B).
Preparing students for success in a changing World.
We care about our students
RPSC-AE, RSMSSB-JE, SSC-JE, RRB-JE, PSU's