Task: Text Categorization
Input (English): Context: Clean Diesel Technologies Inc. or CDTi (NASDAQ: CDTI) is a global vehicle emissions control system provider focusing on heavy duty and light duty diesel pollution control. The company has two divisions including Heavy Duty Diesel Systems division which focusing on developing and producing exhaust emission control solution and Catalyst division engaged in developing catalyst applied for emission reduction.
Question: The document can be classified to which topic? 
Options: 1)OfficeHolder, 2)Company, 3)Film, 4)Village, 5)MeanOfTransportation
Output (English): 2