Exam form doubt

Dear learned friends,

I applied for both groups in may-2013 examinations final. But i didnt appear for the first group. i wrote only 2nd group and passed.

Now while applying for the nov-2013 examination for first group, details about last appearance should be given. For may 2013 i applied for both and appeared in group 2 only. So, what i need to select in last appearance drop down menu. Should i select only second group or both.

Kindly clarify, Thanks in advance.