A) 550 gigabytes
B) 199,998 terabytes
C) 2.5 petabytes
D) 10.2 petabytes
C) Your brain can store around 2.5 petabytes (or a million gigabytes).
Your brain works like a video camera, recoding memories for instant replay. Granted we don’t remember all of our memories, but if your brain were to retain all the footage of your life, you could live up to 300 years old before maxing out your memory storage capacity.
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The Scientific American. http://www.scientificamerican.com/article/what-is-the-memory-capacity