Tyler Prairie borrows money from City Bank to purchase inventory for his business, Farmers Galore. The bank takes a security interest in all of Tyler's inventory. Farmer Fiona purchases a tractor from Tyler. Which of the following is true?

Select one:

a.City Bank loses its security interest in the tractor and the proceeds as soon as the tractor is sold.

b.

City Bank's security interest in the tractor automatically switches to a security interest in Tyler's car.

c.

City Bank has an automatic security interest in the proceeds from the sale of the tractor for a limited time.

d.

City Bank retains its security interest in the tractor that Fiona now owns.