Distance on the number line between two recurring decimals

1. A.
   $\frac{21}{90}$
2. B.
   $\frac{19}{90}$
3. C.
   $\frac{21}{100}$
4. D.
   $\frac{56}{90}$

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1. A.
   $\frac{1}{6}$
2. B.
   $\frac{1}{5}$
3. C.
   $\frac{16}{45}$
4. D.
   $\frac{11}{90}$

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