When a running line is occupied ________ entry must be made in TSR. A. Red Ink B. Green Ink C. Yellow Ink D. None of these

The correct answer is: A. Red Ink

When a running line is occupied, an entry must be made in TSR in red ink. This is to indicate that the line is no longer available for use.

Option B is incorrect because green ink is not the correct color to use for this type of entry.

Option C is incorrect because yellow ink is also not the correct color to use for this type of entry.

Option D is incorrect because there is no such thing as a “none of these” option in this case.