boolean allOptionsFilledUp() {
   if (c.getFrom() != null && c.getTo() != null && c.getD() != null && (c.isAc() || c.isNonAC())) {
     return true;
   }
   return false;
   // if any one of the options has not been selected, this function will return false and the
   // client will be stuck in the homepage
 }