High voltage transmission lines use

Suspension insulators
Pin insulators
Both (A) and (B)
None of the above

The correct answer is: C. Both (A) and (B)

Suspension insulators are used to support the conductors of a transmission line at a safe distance from the ground. They are typically made of porcelain or glass and have a long, slender shape that helps to minimize the amount of wind resistance they experience. Pin insulators are used to connect the conductors of a transmission line to the supporting structure. They are typically made of porcelain or glass and have a short, stout shape that helps to resist the forces of tension and compression.

Both suspension and pin insulators are essential components of high voltage transmission lines. They work together to ensure that the conductors are safely supported and that the transmission line can operate at its full capacity.

Here is a diagram of a high voltage transmission line showing the suspension and pin insulators:

The suspension insulators are the long, slender insulators that support the conductors. The pin insulators are the short, stout insulators that connect the conductors to the supporting structure.

I hope this helps! Let me know if you have any other questions.