An Approval Process is dened in the Expense_Item__c object. A business rule dictates that whenever a user changes the Status to ` ̃Submitted' on an
Expense_Report__c record, all the Expense_Item__c records related to the expense report must enter the approval process individually.
Which approach should be used to ensure the business requirement is met?
A. Create a Process Builder on Expense_Report__c with an 'Apex' action type to submit all related Expense_Item__c records when the criteria is met.
B. Create a Process Builder on Expense_Report__c to mark the related Expense_Item__c as submittable and a trigger on Expense_Item__c to submit the records for approval.
C. Create two Process Builders, one on Expense_Report__c to mark the related Expense_Item__c as submittable and the second on Expense_Item__c to submit the records for approval.
D. Create a Process Builder on Expense_Report__c with a 'Submit for Approval' action type to submit all related Expense_Item__c records when the criteria are met.

Can anyone explain the correct process for the above question I think using process builder approval action we can submit only one record I'm not aware of related records.

Thank you