In comparison to light crude oil, which of the following statements is NOT true with respect to heavy crude oil? 

A. most of the remaining oil reserves consist of heavier crudes.
B. refining heavy crude oil is more expensive.
C. heavy crude oil is more viscous.
D. oil companies prefer heavy crude oil because it is more profitable.
E. heavy crude oil is more difficult to extract.


Answer: D

Environmental & Atmospheric Sciences

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