Demonstrated his wireless telephone to a friend, and his words he spoke were "can you hear me now?"

Demonstrated his wireless telephone to a friend, and his words he spoke were "can you hear me now?"

Demonstrated his wireless telephone to a friend, and his words he spoke were "can you hear me now?" 









a. Nathan B. Stubbefield
b. Samuel Morse
c. Guglielmo Marconi
d. Lee De Forest










Answer: A