Which is the best revision of this informal sentence? Read this excerpt from a student’s analytical essay.

Tweedledee and Tweedledum are two crazy characters that Alice runs into as she goes through the Looking-Glass land.

Which is the best revision of this informal sentence?
A: I think Tweedledee and Tweedledum are two very unusual characters whom you would never, ever meet in the real world.
B: Tweedledee and Tweedledum are two characters who come to life after Alice recites a well-known nursery rhyme about them.
C: Tweedledee and Tweedledum are just crazy with the way they act and the nonsensical things they say to each other and to Alice.
D: Two of the more memorable characters whom Alice encounters during her journey through the Looking-Glass land are Tweedledee and Tweedledum.