Hello Shilpa
I made the similar mistake in H4 EAD renewal application and received RFE to prove C36 category because your previous H4 ead approved on C26 category .I wrote letter ASAP along with new application with corrected C26 category, its been 15 day still waiting their decision.
what did they do with your case accept / reject ? , how long did it take to receive their decision ?.
Thanks in advance .