Find Longest List Element

Write a Python function `find_max_length_element(lst)` that takes a list of lists as input and returns the sublist with the maximum length. If there are multiple sublists with the same maximum length, return the first one encountered.

#### Example Usage
```python [main.nopy]
print(find_max_length_element([[1], [1, 2], [1, 2, 3]]))  # Output: [1, 2, 3]
print(find_max_length_element([['A'], ['A', 'B'], ['A', 'B', 'C']]))  # Output: ['A', 'B', 'C']
print(find_max_length_element([[1, 1], [1, 2, 3], [1, 5, 6, 1]]))  # Output: [1, 5, 6, 1]
```

#### Constraints
- The input list will contain only lists as its elements.
- The input list will have at least one element.
def find_max_length_element(lst):
    """
    Find the sublist with the maximum length in a list of lists.

    Args:
        lst (list of lists): A list containing sublists.

    Returns:
        list: The sublist with the maximum length.
    """
    # Your code here
    pass
Intermediate listsfunctions
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