|Question 19Verbal

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Text
______ a US state when it ratified the US Constitution on December 12, 1787, was thereby empowered, via its representatives to the US Congress, to vote on whether to admit Louisiana as a state on April 30, 1812.
Which choice completes the text so that it conforms to the conventions of Standard English?
Pennsylvania would officially become
A
Pennsylvania had officially become
B
Pennsylvania officially became
C
Pennsylvania, having officially become
D