k is an integer for which $$\frac{1}{2^{1-k}}$$

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k is an integer for which $$\frac{1}{2^{1-k}}$$<$$\frac{1}{8}$$

Quantity A:k

Quantity B:-2

A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.

答案：B

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