Which code segment should you use?

You need to create a stored procedure that accepts a table-valued parameter named @Customers.
Which code segment should you use?

A.
CREATE PROCEDURE AddCustomers (@Customers varchar(max))

B.
CREATE PROCEDURE AddCustomers (@Customers Customer READONLY)

C.
CREATE PROCEDURE AddCustomers (@Customers CustomerType OUTPUT)

D.
CREATE PROCEDURE ADDCUSTOMERS
(@Customers varchar (max)) AS EXTERNAL NAME Customer.Add.NewCustomer