We need to establish the seniority order based on the given statements:
Combining the relationships:
The most senior person is Mr. North.
The question states that if the senior-most person declines, the next person in line will be appointed.
The seniority order is:
If Mr. North declines, the next most senior person is Mr. South.
Therefore, Mr. South will be the new Vice Chancellor.
| Drugs added | No. of colonies | Drugs added | No. of colonies |
|---|---|---|---|
| A | 1156 | CD | 786 |
| B | 1148 | ABC | 30 |
| C | 1161 | ABD | 42 |
| D | 1139 | ACD | 630 |
| AB | 46 | BCD | 36 |
| AC | 640 | ABCD | 30 |
| AD | 942 | ||
| BC | 51 |