The pie chart given below shows the number of mobile phones sold by six companies in a year. The total mobile phones sold by six companies are 500. Number of mobile phones sold by a particular company is shown as a percentage of total number of mobile phones sold by all these six companies.
What is the ratio of number of mobile phones sold by C to number of mobile phones sold by F?
1
2 ∶ 7
2
5 ∶ 2
3
3 ∶ 2
4
2 ∶ 5