[Solved] Which of the following is true about H.R.10 (Keogh)plans? A)The plan must be established before the end of the tax year,and contributions must be made before the due date of the tax return,plus extensions. B)The plan must be established and contributions must be made before the end of the tax year. C)The plan must be established and contributions must be made before April 1. D)The plan must be established and contributions must be made before the due date of the tax return,plus extensions. Silicoclastic Rock: Sedimentary rocks composed mostly of silicate minerals, formed from the accumulation of clastic sediments. Microscopic Organisms: Living beings that are too small to be seen with the naked eye, including bacteria, viruses, fungi, and protozoa, playing essential roles in ecosystems and human health. Siberian Traps: A large region of volcanic rock in Siberia, known for one of the largest volcanic events in Earth's history, linked to the mass extinction at the end of the Permian period. Ocean Acidification: The process by which seawater becomes more acidic due to the absorption of carbon dioxide from the atmosphere, which can affect marine life and ecosystems.