The superposing waves are represented by the following equations : \[{{y}_{1}}=5\sin 2\pi (10\,t-0.1x)\], \[{{y}_{2}}=10\sin 2\pi (20\,t-0.2x)\] Ratio of intensities \[\frac{{{I}_{\max }}}{{{I}_{\min }}}\] will be [AIIMS 1995; KCET 2001]

• A.            1    
• B.            9
• C.            4    
• D.            16