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My science teacher explained how the weather cycle works using an illustration.

Which is the best revision of this sentence?

A.
My science teacher explained how the weather cycle, using an illustration, works.
My science teacher explained how the weather cycle, using an illustration, works.
B.
Using an illustration, my science teacher explained how the weather cycle works.
Using an illustration, my science teacher explained how the weather cycle works.
C.
Using an illustration, how the weather cycle works, explained my science teacher.
Using an illustration, how the weather cycle works, explained my science teacher.
D.
My science teacher explained using an illustration how the weather cycle works.