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(Choose 1 answer)
Suppose the data is stored in HDFS format and you want to find how the data is structured. For this, which of the following command would help you find out the names of HDFS keys?
Note: HDFS file has been loaded by h5py as hf.
A. hf.key()
B. hf.key
C. hf.keys()
D. hf.keys
