Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Club | Played | Drawn | Lost | Points for | Points against | Points difference | Points |
| --- | --- | --- | --- | --- | --- | --- | --- |
| Club | Played | Drawn | Lost | Points for | Points against | Points difference | Points |
| Newport RFC | 30 | 1 | 2 | 1054 | 550 | +504 | 82 |
| Neath RFC | 30 | 1 | 6 | 947 | 557 | +390 | 70 |
| Pontypridd RFC | 30 | 2 | 8 | 820 | 641 | +179 | 62 |
| Aberavon RFC | 30 | 0 | 13 | 774 | 627 | +147 | 51 |
| Carmarthen Quins RFC | 30 | 1 | 13 | 674 | 629 | +45 | 49 |
| Swansea RFC | 30 | 0 | 14 | 853 | 710 | +143 | 48 |
| Bridgend Ravens | 30 | 1 | 15 | 757 | 767 | -10 | 43 |
| Cross Keys RFC | 30 | 0 | 17 | 753 | 777 | -24 | 39 |
| Bedwas RFC | 30 | 2 | 16 | 644 | 797 | -153 | 38 |
| Caerphilly RFC | 30 | 1 | 18 | 658 | 918 | -260 | 34 |
| Pontypool RFC | 30 | 0 | 18 | 543 | 698 | -155 | 34 |
| Cardiff RFC | 30 | 0 | 19 | 649 | 797 | -148 | 33 |
| Newbridge RFC | 30 | 3 | 17 | 585 | 803 | -218 | 33 |
| Llanelli RFC | 30 | 2 | 18 | 701 | 765 | -64 | 32 |
| Llandovery RFC | 30 | 2 | 18 | 681 | 787 | -106 | 32 |
| Ebbw Vale RFC | 30 | 1 | 19 | 554 | 822 | -268 | 31 |
| Correct as of 2004-06-10 | Correct as of 2004-06-10 | Correct as of 2004-06-10 | Correct as of 2004-06-10 | Correct as of 2004-06-10 | Correct as of 2004-06-10 | Correct as of 2004-06-10 | Correct as of 2004-06-10 |
Question:
What club had a points difference of -24?
Answer:
Cross Keys RFC