Refer to the input text as context and select the correct relationship between 'Volvo' and 'truck' from the available options.
Options: subsidiary, currency, director/manager, product/material produced

In addition the report provides the average selling price for top-selling Class 8 models for each of the major truck OEMs – Freightliner (Daimler); Kenworth and Peterbilt (Paccar); International (Navistar); and Volvo and Mack (Volvo).
product/material produced