How should the consultant meet the requirements utilizing the standard field service lightning data model?

Northern Trail outfitters (NTO) want to track the report on individual tasks completed, including part consumed and pricing details, as part of the work order completion process. NTO want to schedule one or multiple tasks to the different technician as needed

How should the consultant meet the requirements utilizing the standard field service lightning data model?
A . Create work order line item, each with its own child service appointment
B . Create a multiple service appointment, each with its own child task records
C . Create a multiple service appointment each with its own child work order line item
D . Create a custom object records, each with its own child service appointment

Answer: A