Which of the following statement is False:

Question

A.Cinder cones are built from ejected lava fragments and are usually less than 300 meters high
B.Calderas are large collapsed depressions having more or less circular form
C.Most volcanoes are fed magma through short conduits called pipes that connect a magma chamber to the surface
D. Sills are tabular discordant bodies that are produced when magma is injected into fractures