Direction: The bar graph given shows the mathematics marks obtained by \[\mathbf{40}\] pupils. A pupil passed the exam if he scored \[50\] marks and above. Find the ratio of the number of pupils who passed to the number of pupils who failed.

• A. \[9:1\]                           
• B.                    \[2:9\]               
• C.                    \[1:9\]                           
• D.                    \[9:2\]