Choose the letter A, B, C or D to answer these following questions
Mark Zuckerberg is co-founder and CEO of the social-networking website Facebook, as well as one of the world's youngest billionaires. Zuckerberg was born on May 14th, 1984, in White Plains, New York, into a comfortable, well-educated family. He was raised in the nearby village of Dobbs Ferry.
Zuckerberg developed an interest in computers at an early age; when he was about 12, he used Atari BASIC to create a messaging program he named "Zucknet." His father used the program in his dental office, so that the receptionist could inform him of a new patient without yelling across the room. The family also used Zucknet to communicate within the house. Together with his friends, he also created computer games just for fun. "I had a bunch of friends who were artists," he said. "They'd come over, draw stuff, and I'd build a game out of it."
In June 2004, Zuckerberg dropped out of college and moved the company to Palo Alto, California. By the end of that year, Facebook had 1 million users. One year later, Zuckerberg's enterprise received a huge boost from the venture capital firm Accel Partners. Accel invested $12.7 million into the network, which at the time was open only to Ivy League students.
Zuckerberg's company then granted access to other colleges, high school and international schools, pushing the site's membership to more than 5.5 million users by December 2005. The site began attracting the interest of other companies that wanted to advertise with the popular social hub like Yahoo! and MTV network.
Who were the first one to use the network?