NO.PZ2023122201000044
问题如下：
How is crude oil typically classified in the commodities market?选项：
A.a soft commodity. B.a hard commodity. C.neither as a soft commodity nor a hard commodity.解释：
In the commodities market, crude oil is a hard commodity because it is mined or extracted, not being cultivated or grown.soft和hard是怎么定义的
