10. (TCO G) Answer the following questions concerning the sources of tax law. a. What role does the Internal Revenue Service play in interpreting, and providing guidance on, the tax law? What types of tax law guidance are published by the IRS? b. What roles do the U.S. Constitution and U.S. Congress play in creating the tax law? Briefly explain how a tax bill becomes a tax law. c. Describe the components of the common body of tax law (CBOTL).