What is the purpose of the Balance de Sumas y Saldos in accounting?

The Balance de Sumas y Saldos shows all the movements that have occurred in the Debit and Credit of the accounts involved in the accounting exercise.
The Balance de Sumas y Saldos is used to check if the Libro Mayor is balanced.
The Balance de Sumas y Saldos shows the Profit or Loss of the company.
a) I and II are correct.
b) II and III are correct.
c) I and III are correct.