Option 4 - ITE Land use type

I am working on a LEED NC 2009 project, which is only to build a head office building which is located inside the factory / manufacturing facility (the owner decided to certify only for its office). The construction of the factory and the office building will be performed simultaneously. This project is located in a suburban area, outside of US. There is no local zoning requirements, so Option 4 applies. My question is what kind of ITE parking generation's landuse should I take? Office building or Manufacturing (since its located inside manufacturing facility). Fyi, both facility will have its own parking spaces.