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（请给出正确答案）
Which constructs a DataOutputStream？（）
- A、 New dataInputStream（“in.txt”）；
- B、 New dataInputStream（new file（“in.txt”））；
- C、 New dataInputStream（new writer（“in.txt”））；
- D、 New dataInputStream（new FileWriter（“in.txt”））；
- E、 New dataInputStream（new InputStream（“in.txt”））；
- F、 New dataInputStream（new FileInputStream（“in.txt”））；
参考答案
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