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.

I can't talk right now. / I am being really busy. / I'll call you later.

A

I can't talk right now

B

I am being really busy

C

No error

D

I'll call you later