Mistake in inter exam

I have written my taxation paper today for December 2021 attempt and I have unintentionally written all the answers of direct tax in the booklet given for indirect tax out of sheer confusion and nervousness. 

(IDT answers and DT answers in the booklet given for IDT) 

I'm very tensed that my paper whether my paper will be considered or not.

Please.....suggest any remedies if can work out.