Andre signs an instrument which states "I promise to pay to the order of my business law professor $500.00 on October 1" and signs his name. This instrument is

 

	a.	negotiable since Andre only has one business law professor.
	b.	negotiable because it contains an express promise to pay $500.00.
	c.	not negotiable because it does not state a named payee.
	d.	is bearer paper and therefore negotiable.