What is the normal visual acuity?
A) 20/20
B) 20/30
C) 20/40
D) None of the listed responses is correct.
A
Explanation:
B) A visual acuity of 20/30 is not as sharp as normal visual acuity.
C) A visual acuity of 20/40 is not as sharp as normal visual acuity.
D) One of the listed responses is correct.
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