Which of the following is correct concerning terms of trade credit of 4/10, EOM, net 90?

(1) The discount period expires on the last day of the month.

(2) The invoice becomes delinquent 90 days after the last day of the month.

(3) The discount period ends on the 10^thday of the following month.

(4) The discount period ends either 10 days after invoicing or at the end of the month, whichever is earlier.