In 1921,realtor Billy Ingram Closed His Real-Estate Company and Opened

In 1921,realtor Billy Ingram closed his real-estate company and opened White Castle restaurants to sell hamburgers.In 1921,hamburgers were thought to be made from rotten beef and not fit for human consumption.Ingram ground fresh beef in front of customers to prove it was safe and was the first to successfully sell hamburgers to the middle class.Today,Ingram is credited as the founder of the fast-food industry.He could not,however,convert new information about social and cultural changes into his strategic plans.White Castle has 330 locations,and McDonald's has 25,000 stores.What technology difficulty did White Castle have vs other fast food chains that hindered its growth rate?

A) White Castle was unable to change raw data into useful information as well as its competitors could.
B) The competitive advantage White Castle achieved from being first was not sustainable.
C) White Castle lost its pioneering differential.
D) Product diffusion rates were slow.