When deciding whether or not to lease an asset, the _____________ of incremental cash flow of lease versus buy should be compared against the ______________, and if the first is lower then the company should proceed with the lease.

	return on equity; WACC
	internal rate of return; cost of debt
	internal rate of return; after-tax cost of debt
	cost of debt; internal rate of return
	WACC; after-tax cost of debt