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.
By embarking on that journey, he intends to kill two birds with one stone. This means that he

• A.promises to bring his children two birds
• B.engages in double dealing
• C.intends to achieve two aims at once
• D.attends to two people at the same time