Which of the following compounds can be an enol tautomer of 1,3-cyclohexandione? 
Definitions:
Plants
Organisms belonging to the kingdom Plantae that are primarily autotrophic, photosynthetic, and multicellular, commonly found on land.
Stolons
Horizontal stems or runners that grow along the ground, producing new plants at the nodes, commonly seen in strawberry plants.
Rhizomes
Underground stems that grow horizontally, producing roots and shoots at intervals to enable some plants to spread.
Difference
A distinguishing factor or quality that sets one thing apart from others, often utilized to compare and contrast entities or concepts.
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