What is the purpose of electrocardiografía transtelefónica?

It allows obtaining the opinion and analysis of each diagnostic test by a specialist.
It is a communication system of great value between specialists and patients with cardiovascular pathologies.
It is a technique that replaces the physical relationship between doctor and patient.
It is a technique that is not useful for veterinary medicine.
a) I and II are correct.
b) II and III are correct.
c) I and III are correct.
d) II and IV are correct.