A News Article Discussing the Evolution of Domestic Dogs from Wolves

A news article discussing the evolution of domestic dogs from wolves included this statement: "On its way from pack-hunting carnivore to fireside companion, dogs learned to love-or at least live on-wheat, rice, barley, corn, and potatoes." What is a more scientifically accurate way to state what happened with dogs?

A) Dogs mutated to be able to eat wheat, rice, barley, corn, and potatoes.
B) Some wolves may have had variants in their digestion that allowed them to eat wheat, rice, barley, corn, and potatoes and so were able to survive with humans.
C) Being around humans represented an advantage, so wolves were able to take advantage of that by changing their digestion to be able to eat wheat, rice, barley, corn, and potatoes.
D) Dogs were created at the same time as wolves.