Birds can perch safely on overhead electric power cables without being electrocuted because?

A. birds can withstand high p.d. of the electric power cables
B. any accumulated charge on the birds is quickly dissipated
C. the feet of the birds are well insulated
D. the current is a.c. and has particular direction
E. there is no p.d between the birds and the cables

Correct Answer:

Option C – the feet of the birds are well insulated