A log file is stored in variable `a`. The file has the following format for each log entry, in order, stored in big endi

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A log file is stored in variable `a`. The file has the following format for each log entry, in order, stored in big endian:

Field 1: 2-byte integer -

Field 2: 2-byte integer -

Field 3: 4-byte integer -
Which of the following would unpack a line from the log file into the proper fields?

A. struct.unpack('>HH4s',a)
B. struct.unpack('<HHssss',a)
C. struct.unpack('>HHHH',a)
D. struct.unpack('!BxBx4s',a)