Write the next sentence in this paragraph:

How to safely keep multiple hamsters
Know your species.
Only certain hamsters should be kept in a cage together. Dwarf hamsters, which include russian, chinese, and djungarian hamsters, are very social and enjoy the company of a friend.

Available options:
(A). Dwarf hamsters love interacting with people and usually claim to be " litter babies " when cared for. Put your hamster's cage in a location with a good heat source.;
(B). You might consider picking a dwarf hamster specifically for a relaxing and friendly environment and not a playful one. However, if you suspect that one of your hamsters is a dwarf hamster, consider bringing him into the cage with you to ensure a safe environment.;
(C). Syrian hamsters and other large breeds, though, prefer to live alone. Most pet stores sell dwarf hamsters.;
(D). Chinchillas and various other exotic breeds may not be allowed in a small cage. Choose the right space for your hamster.;
(C).