| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | Resource Unit - Description |  |  |  |  |
| 3 | RU Type | CBW20 | CBW40 | CBW80 | CBW80+80 and CMW160 |
| 4 | 26-Tone RU | 9 | 18 | 37 | 74 |
| 5 | 52-Tone RU | 4 | 8 | 16 | 32 |
| 6 | 106-Tone RU | 2 | 4 | 8 | 16 |
| 7 | 242-Tone RU | 1 | 2 | 4 | 8 |
| 8 | 484-Tone RU | N/A | 1 | 2 | 4 |
| 9 | 996-Tone RU | N/A | N/A | 1 | 2 |
| 10 | 2x996 Tone RU | N/A | N/A | N/A | 1 |

Question: What types of resource units are there?
Answer: The RUs defined are 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU and 2x996-tone RU.