Fluid Magma Rises for All of the Following Reasons EXCEPT

Multiple Choice

Fluid magma rises for all of the following reasons EXCEPT:

A) surrounding rocks press on the magma and squeeze it upward.
B) it is less dense than the solid rock that surrounds it.
C) gases in the magma expand outward, driving the magma upward.
D) the Earth's magnetic field acts on the iron component of the magma.