Overhead Service Conductors, Accessible Only to Pedestrian Traffic, Must Have

Overhead service conductors, accessible only to pedestrian traffic, must have a minimum ____ vertical clearance above finished grade, sidewalks, platforms, or projections that will permit personal contact.

A) 6-ft (1.8-m)
B) 8-ft (2.4-m)
C) 10-ft (3.0-m)
D) 12-ft (3.7-m)