Why does the author of "Enrico Fermi: The 'Italian Navigator'" begin the story by describing "a strange telephone call" that was made between Chicago and Cambridge, Massachusetts?

A.
to remind readers that some great discoveries are made completely by accident

B.
to show readers that, although Fermi was a serious scientist, he still had a charming sense of humor

C.
to help readers understand that Fermi's work was so important that it had to be kept top secret

D.
to suggest to readers that there were people in America who wanted to see Fermi's experiments fail

Question

Why does the author of "Enrico Fermi: The 'Italian Navigator'" begin the story by describing "a strange telephone call" that was made between Chicago and Cambridge, Massachusetts?	
 
 A.
to remind readers that some great discoveries are made completely by accident
 
 B.
to show readers that, although Fermi was a serious scientist, he still had a charming sense of humor
 
 C.
to help readers understand that Fermi's work was so important that it had to be kept top secret
 
 D.
to suggest to readers that there were people in America who wanted to see Fermi's experiments fail