Which version of the sentence uses correct parallel structure?

A.You can be a little fish in a big pond, or you are being a big fish in a little pond.

B. You can be a little fish in a big pond, or you can be a big fish in a little pond.

C. You can be a little fish in a big pond, or to be a big fish in a little pond.

D. You can be a little fish in a big pond, or you are a big fish in a little pond.