Why don't sailors ever come to Brobdingnag?
A) Because the sea around Brobdingnag is surrounded by impassable rocks and whirlpools
B) Due to the giant inhabitants of Brobdingnag who pose a threat to sailors
C) The magnetic force around Brobdingnag interferes with navigational instruments
D) Brobdingnag is located in a remote and uncharted part of the ocean