Write the next sentence in the following story.

How to care for winter white dwarf hamsters
Get a suitable cage.
The minimum cage size for one hamster is 450 square inches of floor space. It is recommended that you have cages larger than that, though.

Options are:
(A). Older hamsters, who do not have fur on their coats will need more space. Wear the right clothing and toys when your hamster is in a cage..
(B). Preferably buy or make a cage larger than 600 square inches. This might sound like a lot, but imagine being trapped in a room your whole life..
(C). Two or three hamsters is always good. Two hamsters can be territorial and they can't go after each other if they are separated..
(D). Choose a 30-gallon (45.7 l) tank. Dwarf hamsters are relatively small and can only live for at least 1-1.4 hours... The answer should be
(B).