Alex said: I will try to learn hard to pass the entrance exam.”

Question:

Alex said: “I will try to learn hard to pass the entrance exam.”

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  A.
  Alex said that he would try to learn hard to pass the entrance exam.
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  B.
  Alex told that he would try to learn hard to pass the entrance exam.
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  C.
  Alex asked that he would try to learn hard to pass the entrance exam.
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  D.
  Alex talked that he would try to learn hard to pass the entrance exam.