question_answer

An optician while testing the eyes find the vision of a patient to be 6/9. By this he means that

A) The person can read the letters of 6 inches from a distance 9 m.

B) The person can read the letters of 9 inches from 6 m.

C) The person can read letters from 6 m which the normal eye can read from 9 m.

D) The person can read letters from 9 m which the normal eye can read from 6 m.