If figured this hack, not sure if effects other places...
in question-view.php page, delete $rules['isbyuser'] ? null : from line 143.
i,e
$rules['aselectable']=($post['type']=='Q') && !qa_user_permit_error($rules['isbyuser'] ? null : 'permit_select_a', null, $userlevel);
to
$rules['aselectable']=($post['type']=='Q') && !qa_user_permit_error('permit_select_a', null, $userlevel);