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