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Check Divisibility by 11

Write a Python function `is_divisible_by_11(n)` that determines whether a given integer `n` is divisible by 11. The function should return `True` if the number is divisible by 11, and `False` otherwise.

#### Example Usage
```python [main.nopy]
print(is_divisible_by_11(121))  # Output: True
print(is_divisible_by_11(123))  # Output: False
print(is_divisible_by_11(0))    # Output: True
```

#### Constraints
- The input `n` will be an integer.
- The function should handle both positive and negative integers.
def is_divisible_by_11(n):
    """
    Determine if a number is divisible by 11.

    Args:
        n (int): The number to check.

    Returns:
        bool: True if n is divisible by 11, False otherwise.
    """
    # Placeholder for the solution
    pass
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