Which of the following is common in lava flows associated with scoria cones?
A) Some scoria cones are not accompanied by a lava flow and vice versa.
B) Some lava flows squeeze out near the base of the scoria cone.
C) The lava flow forms before the scoria cone when gas contents are highest.
D) The lava flows are mostly intermediate to felsic.
E) a and b only
Correct Answer:
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