The following method signature is found in an implemented entity bean named 'CustomerBean.' 'CustomerPK' is a class representing the primary key.

public CustomerPK ejbFindByPrimaryKey(CustomerPK key)
                throws FinderException

By context look up, a client gets the reference to the home object of the above bean, named 'custHome'. It gets the 'CustomerPK' class named 'PK' by a different method. The name of EJBObject is 'Customer', which represents a customer. Which of the following options will you select to invoke the above mentioned method in the client?

Customer = custHome.findByPrimaryKey(PK);

Customer = custHome.ejbFindByPrimaryKey(PK);

custHome = custHome.ejbFindByPrimaryKey(PK);

Customer = findByPrimaryKey(PK);

PK = custHome.findByPrimaryKey(PK);<br>

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