Write the next sentence in the following story.

How to care for captured tree frogs
First, tree frogs need moisture, but this doesn't mean that they get thirsty really quickly.
Instead, their skin dries up within minutes of handling. Get a large aquarium.

Available choices:
[a]. If your frog doesn't like to live in puddles, a thicker glass tank will work. Find a tank that's 6-12 inches (15.
[b]. Five gallon bucket big enough to contain at least four frogs. You will also need to provide at least six frogs.
[c]. Fill it with about a water bottle full of water. Make sure the water stays clean and is changed regularly.
[d]. Add at least 6 frogs to the bottom of the tank. Under the under hides stick a few branches.. The answer should be
[c].