Discussion
The smallest three-digit number exactly divisible by 11 is:
Answer: C
The first multiple of 11 at or above 100:
\[ 11 \times 9 = 99, \qquad 11 \times 10 = 110 \]
So 110. 111 is not a multiple of 11 - its alternating digit sum is \( 1 - 1 + 1 = 1 \).
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