Final answer:
The correct answer to the student's question about IRS Announcements and Notices is option (d), indicating that IRS Notices offer substantive legal interpretations and both Announcements and Notices are published in the Internal Revenue Bulletin.
Step-by-step explanation:
With regard to IRS Announcements and Notices, the correct statement is that IRS Notices contain guidance on substantive interpretations of the law, and that IRS Announcements and Notices are published in the weekly Internal Revenue Bulletin. Therefore, both options (a) and (b) are correct.
IRS Notices are important for tax professionals and taxpayers as they provide official guidance on how the IRS interprets and applies tax laws. On the other hand, IRS Announcements are more for immediate guidance on less substantive tax issues such as extensions of filing deadlines, amendments to regulations, or other updates that are not of a permanent nature.
Hence, option (d) which states Only (a) and (b) are correct, is the right answer to the question regarding the accuracy of statements about IRS Announcements and Notices.