the noise of a dorm slamming came from downstairs reverberated through the house so loudly --like a gunshot--that bruno jumped and Maria let out a small scream. what figurative language is this?

what words form the figurative language?
A. noise from a door slamming came from downstairs
B. reverberated through the house so loudly -- like a gunshot --
C. Bruno jumped and Maria let out a small scream
D. None of these