GAUSS7 2011 Problem 5

Past Contests GAUSS7 GAUSS (GR. 7) - 2011
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The smallest number in the list \{1.0101,1.0011,1.0110,1.1001,1.1100\} is

Answer Choices
A. 1.0101
B. 1.0011
C. 1.0110
D. 1.1001
E. 1.1100