Below is given a set of 6 points which have to be clustered by agglomerative clustering method. Use the single linkage method for clustering.
| Point Label | X | Y |
| A | 6 | 0 |
| B | 1 | 2 |
| C | 2 | 7 |
| D | 4 | 6 |
| E | 5 | 3 |
| F | 11 | 1 |
Answer the following questions based on the data given above.