填空题

Dear Sirs,
Please allow me to introduce myself:Young Chen, male, 28 years of age and unmarried. I am writing to apply for the position of office clerk advertised in "Yangcheng Evening News" of April 9th. After receiving my B. B. A. from Guangdong University, I worked for three years as an office clerk at China Great Wall Computer Group (Shenzhen) Company. For the last two years I have been a secretary to the General Manager of Haicheng Foodstuffs Company, Ltd. In Shenzhen, I am looking for a position of office clerk to increase my experience in business. I have a wide knowledge of business and thoroughly experiences in all types of office work. Copies of my testimonials (推荐书) are encloses, and if you are interested in my application, please give me an opportunity of a personal interview at your convenience.
Sincerely yours,
Young Chen
 

What did Young major in when he was in university（）