Peet's Coffee and Teas Produces Some Flavourful Varieties of Peet's

Peet's Coffee and Teas produces some flavourful varieties of Peet's brand coffee.Is Peet's a monopoly?

A) Yes, there are no substitutes for Peet's coffee.
B) No, although Peet's coffee is a unique product, there are many different brands of coffee that are very close substitutes.
C) Yes, Peet's is the only supplier of Peet's coffee in a market where there are high barriers to entry.
D) No, Peet's is not a monopoly because there are many branches of Peet's.