In a certain CMBS issue $500 million of senior securities and $100 million of mezzanine securities are issued. The coupon on the senior securities is 8%, and that on the mezzanine is 10%. The average contractual interest rate in the underlying mortgage pool is 10%. Assuming annual interest payments and no par value retired or defaulted, how much residual interest will be available for an IO tranche from these two par-valued tranches at the end of the first year?

	$16,000,000
	$10,000,000
	$12,000,000
	$14,000,000