Between the siblings A and B, one is a brother and the other a sister. B is the son of X. X is Y’s husband and O’s brother. How is A related to O?

| Question | Between the siblings A and B, one is a brother and the other a sister. B is the son of X. X is Y’s husband and O’s brother. How is A related to O? | |
| Type | multiple_choice | |
| Option | Granddaughter | incorrect |
| Option | Cousin | incorrect |
| Option | Nephew | incorrect |
| Option | Niece | correct |
Solution: