When will the surface wind in a METAR record a gust factor ?

Question

Question ATPL - Airline Transport Pilot license - Meteorology

QuizVDS · Accepted Answer

When gusts are at least 10 knots above the mean wind speed

QuizVDS · Answer

When gusts are at least 15 knots above the mean wind speed

QuizVDS · Answer

With gusts of at least 25 knots

QuizVDS · Answer

With gusts of at least 35 knots

Id 296 - ATPL - When will the surface wind in a METAR record a gust factor ?