Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a shoreside TELEX terminal number 440122 in the United Kingdom (TELEX country code 51)?

Correct Answer: Option B — 51440122

Inmarsat-C TELEX addressing to a shoreside terminal requires the country code followed by the subscriber number, formatted as a continuous string. The option 51440122 is correct because it omits the plus sign and parentheses, which are not used in Inmarsat-C TELEX address book entries for shoreside destinations.