A survey was conducted on a sample of 1000 persons with reference to their knowledge of English, french and German . The results of the survey are presented in the given Venn diagram. The ratio of the number of the persons who do not know any of the three languages to those who know all the three languages is:

1. $$\cfrac{1}{27}$$
2. $$\cfrac{1}{25}$$
3. $$\cfrac{1}{550}$$
4. $$\cfrac{175}{1000}$$

A

1

B

2

C

3

D

4