GMAT Sentence Correction (SC) | Re: It was only after Katharine Graham became publisher of the Washington

a. looks fine - keep it
b. KG becoming..in 1963...had won...Past perfect is the later of the 2 actions - wrong
c. KG became..in 1963..did move..Past perfect is the later of the 2 actions - wrong
d. Moving..became (right till now)..winning - incomplete statement - wrong
e. Moving..becoming (awkward construction)

Between "a" and "e", "a" has better construction. Correct is "a"

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