You could do that with a directory merge. Here's how:
1. Do the initial setup for a directory merge, connecting the document to the data source.
2. Create a table like the one for your A example.
3. Populate the table with your required mergefields.
4. Insert two paragraph breaks after the table.
5. Insert a «Next Record» field into the first paragraph after the table.
6. Copy the table and paste it into the second paragraph after the table.
7. Shade the first or second table.
8. Make sure there is nothing after the second table except for two paragraph breaks
9. Run the merge.

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]