The Nash Corp. is considering four investments. Which provides the highest after-tax return for Nash Corp. if it is in the 21% federal tax bracket? Assume the tax rate on dividends is 15%.

		A) Treasury bonds at 4%
		B) Corporate bonds at 7.5%
		C) Municipal bonds at 7.25%
		D) Preferred stock at 7.5% Note: Assume that this problem is from before the 2017 Tax Cuts and Jobs Act. Use a dividend tax exemption rate of 70%.