Choice of beverage when papa's promoted (6)

I believe the answer is:

option

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'choice' is the definition.
('option' can be a synonym of 'choice')

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for option that I've seen before include "Thing that may be chosen" , "Right to choose" , "Choice, selection" , "possibility" , "The choice of taking or leaving" .)

I've seen this clue in The Telegraph.

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