After each of the following sentences, a list of possible interpretations of the sentence is given. Choose the interpretation that you consider most appropriate for each sentence.
The restaurant owner offered Olu a drink on the house. This means that

A. the drink was taken to Olu's house
B. Olu was invited to the owner's house
C. the drink was free of charge  
D. Olu was served inside the restaurant

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Correct Answer: C