The format of an I/O area with control characters for the variable length record is

technology mainframe

  1. the data begins in byte 1

  2. byte 0 and byte 1 contains 2 byte length field

  3. byte 0 contains control character and byte 1 and 2 contains the length field

  4. byte 0 and 1 contains the 2 byte length field and byte 3 contains control character

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Correct Option: D

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