Which of the following statement is/are incorrect about Lay-off is true?
I.         It does not apply to establishments where less than 50 workmen on the average per working day have been employed in the proceeding calendar of 12 months.
II.         It does not apply to establishments where less than 50 workmen on the average per working day have been employed in the proceeding calendar year.
III.         It does not apply where work is of seasonal nature and if work is performed intermittently.