Herbert Ralph "Herb" Peterson (January 5, 1919 – March 25, 2008) was an American fast food advertising executive and food scientist most known for being the inventor of the McDonald's Egg McMuffin in 1972. The breakfast business that he pioneered with this item had grown to an estimated $4–5 billion in annual revenues for the fast food restaurant chain McDonald's by 1993.
Herb Peterson was responsible for creating McDonald's breakfast menu.
I believe it was difficult for the system because the text does not explicitally say that he did create the breakfast menu, but it also does not say anything that would discredit that.