SPELLING DIFFERENCES BET US - BRT ENGLISH

For SPM candidates, which one do you prefer to use? And is it acceptable? BRITISH ENGLISH armour armoury behaviour candour clamour colour demeanour endeavour favourite flavour glamour harbour honour humour labour neighbour odour rancour rigour rumour saviour savour savoury splendour valour vapour vigour

Answer; You can use both. But please do not mix them up. If you want to use British style, use it for the whole essay.  USA ENGLISH armor armory behavior candor clamor color demeanor endeavor favorite flavor glamor harbor honor humor labor neighbor odor rancor rigor rumor savior savor savory splendor valor vapor vigo