Deah Barakat, 23, a second-year student in the University of North Carolina School of Dentistry, married Yusor Mohammad, 21, in December, and Mohammad planned to begin her dental studies in the fall, authorities said. Her sister, Razan Mohammad Abu-Salha, was a sophomore at North Carolina State University. Barakat graduated magna cum laude with a B.S. in business administration in May 2013. Yusor Mohammad graduated cum laude with a B.S. in biological sciences in December 2014.