George Weston Limited,a Canadian Food Processing and Distribution Company,is One

George Weston Limited,a Canadian food processing and distribution company,is one of the world's largest producers of breads.
-Refer to George Weston Limited.The company owns the Wonder bread brand.When Weston introduced whole grain white bread,which gives kids the bread texture and colour they recognize and love and parents the vitamins they want for their children,what was it an example of?

A) product line mix
B) quality mix
C) aesthetics modification
D) functional modification