这是一个棘手的问题，但是答案的确是C，因为从未提交过"ONE"的原始值，所以两个记录都被添加到了相同的事务，结果只有一个版本"包含两行，两行都带有"TWO"的描述.

This is a bit of a trick question, but the answer is indeed C, because the original value of "ONE" was never committed, both records were added in the same transaction and as a result there is only one "version" containing two rows, both with a description of "TWO".