You are 19 years old and obtained your B driving licence three years ago. At the birthday party in Zwolle you drank one glass of wine (~0.25 promille) at eight o'clock. At half past nine, over an hour and a half later, you drink a strong cup of coffee and drive off. What applies to you?
You may go up to 0.5‰, just like an experienced driver, so the glass of wine is not a problem either way
You are a novice driver (limit 0.2‰); after ninety minutes your promillage has naturally dropped to around 0.05-0.15‰, so it may already be under the limit
You are a novice driver (limit 0.2‰); the coffee dropped your promillage extra, so you are under the limit
Explanation
Wrong — trap: sobering-up trick. Coffee changes nothing about the 0.1-0.2‰/hour breakdown rate (Book p.15-16).