Cost roll up for a bill of material that has options

We are using the work order module with bill of materials that have options.  When we do the cost roll up function within the work order module, the cost roll up is using the cost for materials from the bill of material without any options thus understating the standard cost for my inventory item.  Is there a way to do a cost roll up for standard cost in work order selecting the options to use so that I can update the standard cost for the finished item to be more accurate?