Given that x = 2^b – (8^31 + 16^5), which of the following values for b yields the lowest value for |x|? Choose the correct choice from the following options:
A) 91
B) 92
C) 93
D) 94
E) 113
8^31 + 16^5 = 2^93 + 2^20   Compared to 2^93, the value of 2^20 is negligible.   2^93 - (2^93 +2^20) will minimize the value of |x|.   The answer is 93.
<result>C</result>
Given that x = 2^b – (8^31 + 16^5), which of the following values for b yields the lowest value for |x|?