Question: Nikos Sofis attended which multi-campus private business school with headquarters in Switzerland?

Context paragraphs:
Nikos Sofis: Born in Munich, Germany, and growing up close by to Frankfurt, he attended the Frankfurt International School from where he graduated in 2011.  In 2013, he attended the EU Business School in Barcelona, Spain, where he began his Sports Management studies.  Since 2014, he continues his studies at the American College of Greece in Athens.  He is fluent in Greek, German, and English.

Sevanan Business School: Sevanan Business School in Switzerland is a private business school.  It offers management courses at undergraduate level and Masters level, accredited to EduQual and London School of Marketing.  Sevanan Business School provides international programmes in Business Management & Marketing Management with internships and industry exposure.  The school is Located at the World Trade Center in Zurich, Switzerland.

Caixanova Business School: Caixanova Business School ("Escuela de Negocios Caixanova" in Spanish) is a private business school located in Vigo (Spain), established in 1987.  It is one of the highest ranked business schools in Spain (the only one in the top 10 out of Madrid or Barcelona).  It has been included amongst the best business schools in the world, according to the list made by "Eduniversal", ranked as “Good Business School”.  Its MBA is considered one of the best master's degrees in Business Administration in Spain (out of 300 available).

European Business School London: European Business School London (EBS London) is a private Business School in Regent's Park in Central London.  It is UK's oldest private business school and a constituent school of Regent's University London.

Rome Business School, Rome: Rome Business School is a private business school and research institute in Rome, Italy.  It offers Master courses in all fields of business and MBA program for international students.  Recognized as research center by the Ministry of Education, Universities and Research (Italy) and by the European Union, the Rome Business School also provides managerial training for individuals, companies, embassies, organizations and governments.

Goizueta Business School: Emory University's Goizueta Business School (also known as "Goizueta Business School", "Emory Business School", or simply "Goizueta" – pronounced "goy-swet-ah") is the private business school of Emory University located in Atlanta, Georgia, United States.  It is named after Roberto C. Goizueta, former president of The Coca-Cola Company.

EU Business School: EU Business School (formerly "European University") is a multi-campus private business school with headquarters in Switzerland.  It operates campuses in Switzerland (Geneva and Montreux), Spain (Barcelona), Germany (Munich), and an executive facility in Yvorne, Switzerland.

London School of Business and Finance: The London School of Business and Finance (informally LSBF) is a for-profit private business school based in the United Kingdom.  It is owned by the corporate group Global University Systems.  LSBF was founded in 2003 by the entrepreneur Aaron Etingen.  By 2015 it had become one of England's largest private colleges.  The school is completely separate from and not affiliated with the similarly-named London Business School (LBS, which is the graduate business school of the University of London), The London Institute of Banking & Finance (formerly ifs University College) or the London School of Economics.

Cologne Business School: Cologne Business School GmbH (CBS) is a private business school established in 1993 in the city of Cologne, Germany.  The business school is a state-recognized university of applied science and conducts research in many fields.  CBS was established in 2011 in cooperation with Dr. Juergen Meyer Foundation a research program focused on business ethics, corporate governance and corporate social responsibility.

Munich Business School: Munich Business School (MBS) is a private international business school located in Munich (Bavaria, Germany).  Munich Business School confers degrees exclusively in business administration.  It offers one undergraduate Bachelor program, 4 graduate Programs (Masters and MBA), a terminal DBA degree in cooperation with Sheffield Hallam University as well as double degree programs in cooperation with numerous other business schools from around the world.  Munich Business School ranks among the top private Business Schools in Germany and in the top 25 performers group regarding internationality and student mobility.

Supporting paragraphs: Nikos Sofis EU Business School
Answer: EU Business School