![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
Christmas trees are often considered as a horticultural crop because _____________ .
B.
they are cultivated on Christmas Day
C.
they assume sufficient value to justify large expenditures for fertilization, pruning, harvesting, and marketing
D.
they are grown for timber or pulp