Given the task definition and input, reply with output. In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.

Context: ImmunoGen Inc. (NASDAQ: IMGN) is a global biotechnology company that is engaged in anti-cancer therapeutics. It was founded in 1981 and is headquartered in Waltham Massachusetts. It has three wholly owned clinical-stage products including IMGN901 IMG853 and IMGN 529. Besides it applies its proprietary TAP (Targeted Antibody Payload) technology ADC (antibody-drug conjugate) and Probody-drug conjugate (PDC) to produce anti-cancer compounds.
Question: The document can be classified to which topic?
Options: 1)Company, 2)Plant, 3)MeanOfTransportation, 4)EducationalInstitution, 5)Building
1