Complete the second pair in the same way as the first pair. \[\frac{4}{16}:\frac{1}{4}::\frac{5}{25}:?\]

• A.   \[\frac{1}{4}\]         
• B.   \[\frac{1}{5}\]
• C.   \[\frac{1}{6}\]         
• D.   \[\frac{1}{7}\]