Everwood Co. had net income of $1,000,000 for the year ending December 31, 2015, its first year of operations. During this time period, Everwood also had a permanent tax difference of $120,000 and its adjusted pre-tax book income is $1,220,000. Analysts have approximated Everwood's taxable income at $735,000 for the year ending December 31, 2011. Which of the following most likely caused the difference between Everwood's book and tax income?

		Premiums paid on life insurance on key executives where the company is the beneficiary.
		Purchases of long-lived capital assets.
		Accrued warranty expenses not yet deductible on the tax return.
		A net operating loss carryback