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.

Although he was sincere and hard-working, / he could not confront / his boss manly.

A

No error

B

he could not confront

C

his boss manly

D

Although he was sincere and hard-working