Task: Text Completion
Input (English): [header] How to start a jellyfish tank [title] Look for a small to medium sized aquarium tank. [step] You can house your jellyfish in an aquarium tank that is clean and sterile. You may decide to have only one to three small jellyfish in a small tank that you can fit on your desk at work or at home. <sep> (A) [title] Place the jellyfish in a somewhat small float aquarium that you can safely transport. [step] Jellyfish most likely do not need to be in a float tank, just this is because they are small and have not yet acclimated to the water. (B) Or you may decide to have four to five large jellyfish in a mini aquarium. [substeps] Do not keep more than one jellyfish in a tank at a time. (C) Or, you may go for a medium sized aquarium tank that can fit a larger number of jellyfish. Look for a tank that is circular in shape or tall and narrow. (D) You can also have a larger aquarium with 18 large jellyfish in it. [substeps] If you decide to have several jellyfish in a small tank, your aquarium won't go into maintenance any time soon.
Output (English): C