A company updates the payroll master file at the end of the week. The payroll time cards are transported to the computer center for processing. The sequence of events followed by the computer center in updating its master file should be
A Batching records of transactions, converting to machine-readable form, validating input, updating the master.
B Batching records of transactions, validating input, converting to machine-readable form, updating the master.
C Converting to machine-readable form, batching records of transactions, validating input, updating the master.
D Validating input, batching records of transactions, converting to machine-readable form, updating the master.