The following sentence has been divided into parts. One of them may contain an error.
Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.

A man tends to one / of the horses after it’s / training at a stud farm.

A

of the horses after it’s

B

A man tends to one

C

No error

D

training at a stud farm