Directions (66-70) : Read this sentence to find out whether there is any grammatical mistake/error in it. The error, if any, will be in one part of the sentence. Mark the part with the error as your answer.

If there is no error, mark 'No error' as your answer. Ignore the errors of punctuation, if any.
The distance between / our eyes and / ears equals the width / of four fingers.

A) The distance between

B) our eyes and

C) ears equals the width

D) of four fingers.

E) No error

Correct answer:
C) ears equals the width



Please provide the error details in above question