The ratio of the present age of two girls is 3 : 4. After two year the ratio will be 7 ; 9. Which of the following statement(s) is/are correct?
l. Ratio of their ages after 10 year is 6 : 7.
II. Ratio of their ages after 12 years is 6 : 7.

A

Only II

B

Neither I nor II

C

Both I and II

D

Only I