From this passage, when did Coca-Cola became America's No. 1 soft drink

A．It is a traditional can.
B．It is a new Can, with updated red and silver graphics.
C．It has a red and white look.
D．The New Coke can is blue.

A．Consumers' Loyalty to the Old Coke Brand
B．Competition between Coca-Cola and Pepsi
C．New Coke — A Lesson in Brand Loyalty
D．Always Coca-Cola

A．Because it's in their plan.
B．Because of consumers' preference.
C．Because of the competition brought by Pepsi Company the "Pepsi Challenge" cam paign.
D．Because the management don't want to keep that brand any more.