When Magma Is on the Move at Shallow Depths _______________

When magma is on the move at shallow depths _______________.

A) it does so quietly without generating earthquakes
B) it commonly generates a swarm of small earthquakes referred to as delirium tremens
C) it commonly generates a swarm of large earthquakes referred to as delirium tremens
D) it commonly generates a swarm of small earthquakes referred to as harmonic tremors
E) it commonly generates a swarm of large earthquakes referred to as harmonic tremors