Volcanic eruptions sometimes empty their stores of lava with such swif

Volcanic eruptions sometimes empty their stores of lava with such swiftness that it causes the overlying land to collapse into the emptied lava chamber, and forms a geographic depression called a caldera.

A) with such swiftness that it causes the overlying land to collapse into the emptied lava chamber, and forms
B) with such swiftness as to cause the overlying land in collapsing into the emptied lava chamber, and forming
C) so swiftly as to causing the overlying land to collapse into the emptied lava chamber, and forming
D) so swiftly that they cause the overlying land to collapse into the emptied lava chamber, forming
E) so swiftly to cause the overlying land to collapse into the emptied lava chamber, forming