Claas Is Europe's Largest Manufacturer of Combine Harvesters

Claas is Europe's largest manufacturer of combine harvesters.Its marketing manager discovered a prospect for his company's product in Russia by looking for large farm owners from the former Soviet Union where its products had not been sold.
-Refer to Claas.As farming becomes more professional and more intensive,farmers are buying more sophisticated machines,which Claas can supply.What would the expensive machines sold by Claas be examples of?

A) installations
B) component parts
C) accessory equipment
D) processed materials