Mr. Bernard's Lost Cookie

Background:

In a 2D grid representing Mr. Bernard's pantry shelves, a special cookie is hidden. It is marked with a '1' in a sea of '0's indicating empty shelves.

Challenge:

Your mission is to write a function locate_x that finds the cookie's coordinates in the 2D list.

Instructions:

1. The function locate_x(array) will receive a 2D list as its parameter.
2. Return the coordinates [row, column] of the '1' in the list.
3. If the list is empty or no '1' is present, return False.

Examples:

locate_x([
    [0, 0, 0],
    [1, 0, 0],
    [0, 0, 0]
]) # Should return [1, 0]

locate_x([
    [0, 0, 0, 0],
    [0, 0, 0, 0],
    [0, 0, 1, 0],
    [0, 0, 0, 0]
]) # Should return [2, 2]

locate_x([]) # Should return None