Pintu and Ayush participate in a \[100\,\,m\] race. Pintu took \[18\frac{1}{5}\] seconds and Ayush took \[21\frac{3}{4}\] seconds. How much longer did Ayush take?

• A.  \[3\frac{11}{20}\sec \]              
• B.  \[3\frac{7}{20}\sec \]
• C.  \[4\frac{1}{20}\sec \]                
• D.  \[3\frac{9}{20}\sec \]