|Question 20Verbal

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The radial velocity method, a means of indirect planetary discovery, has detected previously unknown exoplanets at vast distances from _____ the Neptune-like planet DMPP-1 b; at 296 light-years away, the gas giant 42 Draconis b; and, as of 2023, over 1,000 other exoplanets that are too far away and dim to be observed directly.
Which choice completes the text so that it conforms to the conventions of Standard English?
Earth, at 204 light-years away,
A
Earth at 204 light-years away,
B
Earth at 204 light-years away:
C
Earth: at 204 light-years away,
D