Commercial Electric Power Is Sent Across Country Using High Voltage

Commercial electric power is sent across country using high voltage transmission lines. If low voltage transmission lines were used instead, those low voltage lines would

A) have to use direct current, which would not operate most equipment properly.
B) not be magnetic enough to transform electricity efficiently into energy.
C) have to placed closer to the ground, where they would be more hazardous.
D) have to be made of thicker metal, which would be expensive.