Dear Ms. Varsha,
With due regards to my Ld. friend Naveed, I would take the opportunity to add that there is a fair possibility that the department takes note of the exemption notification in its entirety. As a consequence the department may very well argue that once EXP 3 has been filed that means you have opted for availing the exemption and the condition mentioned in clause (c) no where contemplates that the exporter who has liability in a particular period of six months is only liable to file EXP4.
What I mean to communicate is that while seeing the whole notification together one might reach to a conclusion that filing of EXP4 is indispensable.
I would suggest that if you still have 2 days i.e. Monday 14th and Tuesday 15th October 2013 to file EXP4 for April 2013 to Sep 2013, why dont you opt for filing a NIL EXP4.
Take your best professional Judgment !!!
Regards
CA. Brijesh Verma
9897057757