B. Mixed, but on the side of Centrally Planned.
Because economy within a certain region will be heavily depended on what resources that are available in that region.
Since the Arabian Pennisula do not possess a good climate to produce agricultural products, it's almost impossible for agricultural sector to flourish in this region, and therefore they focused their economy on things such as oil, silk, zaitun, etc.
C: The Allied Powers were forced to surrender France to the Central Powers.
<span>The Commerce Clause: gives government exclusive right to regulate interstate commerce.</span>
A. Recession
Hope this helps.