The Relatively Small Eruptions of the Icelandic Volcano Eyjafjallajokull in 2010

The relatively small eruptions of the Icelandic volcano Eyjafjallajokull in 2010 caused major disruptions because the eruptions ____.

A) were pyroclastic and debris was thrown as far as three kilometers
B) occurred in a densely populated area
C) caused tsunamis and disrupted sea trade
D) took place beneath a glacier resulting in steam explosions that disrupted air traffic for several days
E) caused shallow earthquakes that caused landslides and destroyed buildings