With respect to deductions in the determination of net business income for tax purposes, which of the following statements is correct?

	a.	Cost of sales can be determined using inventory valuation based on either replacement cost or net realizable value.
	b.	Landscaping costs are deductible in the year that they are accrued
	c.	Any premium on the sale of new debt securities by a corporation is amortized over the life of the securities.
	d.	A corporation can deduct the costs of issuing new common shares in the year in which the shares are issued.