Parallelism Questions

[gmat740]

A historian attempting to predict in the 1870’s which nation would take over world leadership from the British probably would have guessed Bismarck’s Prussia and been quite wrong.

(A) have guessed Bismarck’s Prussia and been
(B) have guessed that it would have been Bismarck’s Prussia and he would be
(C) have guessed Bismarck’s Prussia and would be
(D) guess Bismarck’s Prussia and be
(E) guess that it would be Bismarck’s Prussia and would have been

OA [spoiler][A][/spoiler]
My answer is [spoiler]C([/spoiler]parallel)

[PinkBox]

C doesn't seem parallel. "would have guessed and (would have) been'
"would have" is understood so there is not reason to repeat it. go with A