Until Recently, Emil Flores Wouldn't Buy Any Coffee Except "Blue

Until recently, Emil Flores wouldn't buy any coffee except "Blue Mountain"-a relatively expensive type that few stores sell. He used to have to drive about 10 miles out of his way to buy it at a small shop. Then he was at a friend's home and tried an inexpensive brand of coffee sold by the local supermarket chain. Now he won't buy anything except that brand. For him, the supermarket coffee is

A) an emergency product.
B) a specialty product.
C) a staple product.
D) an unsought product.
E) a heterogeneous shopping product.