Suppose you see three-month European calls on ACD struck at 100 trading at 16, while those struck at 115 are trading at 4. Which of the following statements must be true about the three-month call struck at 110?

a.	It could be trading as low as 10, but no lower.
	b.	It could be trading as high as 10, but no higher.
	c.	It could be trading as high as 8, but no higher.
	d.	It could be trading as low as 8, but no lower.