When is an S corporation required to file Schedule M-1 to properly reflect reconciliation between the financial books and records and the income tax return?

	a.	Schedule M-1 is required when the corporations gross receipts and total assets are greater than $250,000.
	b.	Schedule M-1 is required when the corporations gross receipts are greater than $250,000 or total assets at greater than $1 million.
	c.	Schedule M-1 is required when Form K-1s are filed with the corporations return.
	d.	Schedule M-1 is required whenever the corporation has a book-tax difference.