Which of the following statements are true? (There are multiple correct choices and you must select them all in order to get full credit.)

1.Tax avoidance is the illegal minimization of tax liabilities.

2.One of the objectives of the Federal tax law is to encourage socially desirable behavior.

3.Treasury Department Regulations that are issued in Final form do not have the force and effect of law.

4.Revenue Procedures is one of the administrative sources of tax law.

5.When gifts between family members are material and exceed the annual exclusion, a gift tax return needs to be filed.