An employee salary in the non-partitioned EMPLOYEES table, has been updated but the transaction is uncommitted. Which two types of lock are held by the transaction? (Choose two.)

When a row is updated, an exclusive row-level lock (TX lock) is placed on that specific row to prevent other transactions from modifying it until the current transaction commits or rolls back.

A null lock provides no restrictions and is not held on the row being updated by an active modification transaction.

An `UPDATE` operation implicitly acquires a Row Share (RS) lock on the table, which allows concurrent DML operations but prevents conflicting DDL operations that would change the table structure.

An exclusive lock on the table (`EXCLUSIVE` lock) prevents all other DML and DDL operations, which is too restrictive for a standard row-level `UPDATE` operation.

A null lock provides no restrictions and is not held on the table by an active modification transaction.