Parts of the following sentence have been given as options. 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.
The thing about anger is that it can either been a helpful emotion or a discouraging one.

A

a helpful emotion or a discouraging one

B

The thing about anger

C

No error

D

is that it can either been