If a chunk of ice the size of Manhattan and one kilometer thick were to slide off of Antarctica into the ocean, about how much would the global sea level rise?
A. 2.5 meters (about 8 feet)
B. 2.5 centimeters (about 1 inch)
C. 2.5 millimeters (about one tenth of an inch)
D. 0.25 millimeters (about one hundredth of an inch)
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