Which Blocks Of Counter Code Are Enough To Install On A Site So That Yandex.Metrica Can Correctly Collect And Display Information On Site Traffic In The Informer?

Which Blocks Of Counter Code Are Enough To Install On A Site So That Yandex.Metrica Can Correctly Collect And Display Information On Site Traffic In The Informer?
  • Any of the two blocks of code.
  • Only the — Yandex.Metrica informer — block.
  • Both blocks of code.
  • Only the — Yandex.Metrica counter — block.