[Closed] road climbing - sit down or stand? Efficency/Power/Speed up

okay I am never going to be a great climber as I weigh 92kgs not much excess there some but not much - so

on road is it
better to sit down and 'grind up' there power up there

better to sit and 'spin' and keep high cadence

better to stand and power/dance up there.

so go on tell what will work best 😀

ps Bike is a 29er HT with 2.4 tyres but that is irrelevant