The city museum's new exhibit on public transit is notable for showcasing artifacts ______ tracing the political debates that shaped the system; and inviting visitors to record their own commuting stories. Which choice completes the text so that it conforms to the conventions of Standard English? A such as punch cards, station signs, and hand-drawn route maps, B such as punch cards, station signs, and hand-drawn route maps; C such as punch cards; station signs, and hand-drawn route maps, D such as punch cards station signs, and hand-drawn route maps, I’m stuck between a and b