D Yard tracks that have third rail are numbered from which range?

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Multiple Choice

D Yard tracks that have third rail are numbered from which range?

Explanation:
In yards that have third-rail electrification, tracks with that feature are labeled with a D after the track number. The D Yard here has five electrified tracks, so they’re numbered from 1 to 5 with the D suffix: 1D, 2D, 3D, 4D, 5D. That’s why the range is 1D–5D. The other options don’t fit because they either start at 0 or 2, end at 6, or use a different suffix (A) which would indicate a non-electrified or a different yard designation.

In yards that have third-rail electrification, tracks with that feature are labeled with a D after the track number. The D Yard here has five electrified tracks, so they’re numbered from 1 to 5 with the D suffix: 1D, 2D, 3D, 4D, 5D. That’s why the range is 1D–5D. The other options don’t fit because they either start at 0 or 2, end at 6, or use a different suffix (A) which would indicate a non-electrified or a different yard designation.

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