Which sentence shows an idea that would be important to include in a summary of this passage?
A. "He wanted to start selling the cereals to grocery stores, but John refused to participate in a commercial
endeavor."
B. "A die of the desired shape is added to the end of the extruder which forms a ribbon of cooked dough."
C. "Frosted cereals are made by spraying a thick, hot syrup of sugar on the cereal in a rotating drum."
D. "Will Keith Kellogg and his brother, physician John Harvey Kellogg, invented the first precooked flaked
cereal."