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

Scoria Cones

Volcanic cones made up of small, loose rock fragments ejected from a vent.

Lava Flow

Molten rock expelled by a volcano during an eruption that moves over the ground’s surface, eventually cooling and solidifying.

Intermediate

A term often used to describe a middle or median condition, quality, or degree, such as in the context of volcanic rocks that have silica content between felsic and mafic compositions.