Answer & Explanation
C) Generate a registry file for the assembly by using the Assembly Registration tool (Regasm.exe) Register the file on the client computer.
The Assembly Registration tool reads the metadata within an assembly and adds the necessary entries to the registry, which allows COM clients to create .NET Framework classes transparently. Once a class is registered, any COM client can use it as though the class were a COM class..
The Strong Name tool helps sign assemblies with strong names.
The Type Library Importer, tlbimp.exe, converts the type definitions found within a COM type library into equivalent definitions in a common language runtime assembly. It would not be useful in this scenario however.
This would not allow the COM application to use the class.