Passage: The University of California, Los Angeles (UCLA) is a public research university in Los Angeles. It became the Southern Branch of the University of California in 1919, making it the fourth-oldest (after UC Berkeley, UC San Francisco, and UC Davis) of the 10-campus University of California system. It offers 337 undergraduate and graduate degree programs in a wide range of disciplines. UCLA enrolls about 31,000 undergraduate and 13,000 graduate students and had 119,000 applicants for Fall 2016, including transfer applicants, making the school the most applied-to of any American university.The university is organized into six undergraduate colleges, seven professional schools, and four professional health science schools. The undergraduate colleges are the College of Letters and Science; Samueli School of Engineering; School of the Arts and Architecture; Herb Alpert School of Music; School of Theater, Film and Television; and School of Nursing.

Question: What is the abbreviation for University of CA
(UCLA