Which of the following statements is true?

a. Journal vouchers detailing transaction activity flow from various operational departments into the GLS, where they are independently reconciled and posted to the journal voucher history file.

b. Journal vouchers summarizing transaction activity flow from the accounting department into the GLS, where they are independently reconciled and posted to the general ledger accounts.

c. Journal vouchers summarizing transaction activity flow from various operational departments into the GLS, where they are independently reconciled and posted to the general ledger accounts.

d. Journal vouchers summarizing transaction activity flow from various operational departments into the GLS, where they are independently reconciled and posted to the journal voucher history file.