Which of the following best describes the meaning of the multiplicities next to the number 5 in the preceding diagram?

1- Each Broker is involved in one Buy/Sell Transaction.

2-Each Broker is involved in many Buy/Sell Transactions.

3-Each Broker is involved in a minimum of one Buy/Sell Transaction.

4-Each Broker is involved in a minimum of zero Buy/Sell Transactions.

5-Both "Each Broker is involved in a maximum of many Buy/Sell Transactions" and "Each Broker is involved in a minimum of zero Buy/Sell Transactions" are correct.