The transmission line is said to be lossless when the
(a) Conductor is perfect and dielectric is lossless
(b) Conductor is perfect and dielectric is lossy
(c) Conductor is imperfect and dielectric is lossy
(d) Conductor is imperfect and dielectric is lossless
The question was asked in an international level competition.
My question is based upon Lossless and Distortionless Line in portion Transmission Lines of Electromagnetic Theory