What is the most appropriate order of actions to take during an electrical emergency?

a) Call management, call 9-1-1, identify the source, turn off the power
b) Identify the source, turn off the power, rescue anyone who’s injured, call 9-1-1
c) Rescue anyone who’s injured, call 9-1-1, turn off the power
d) Call 9-1-1, call management, identify the source, turn off the power