Direction: The pie chart shows the number of different flavours of milk shakes sold at an ice-cream parlour in a day. Same number of apple, strawberry and orange flavours were sold. What is the ratio of the number of mango milk shakes to that of apple milk shakes sold if 600 milk shakes were sold in all?

• A.  \[13:6\]                              
• B.  \[12:7\]              
• C.         \[12:5\]              
• D.         \[13:15\]