It can be inferred from the passage that A. tipping customs round the world are quite different. B. it's customary to leave a tip in restaurants in Iceland. C. most hotel porters in Europe
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It can be inferred from the passage that
tipping customs round the world are quite different.
it's customary to leave a tip in restaurants in Iceland.
most hotel porters in Europe don't receive a tip.
people in many countries have similar tipping habits.