The year 1930 witnessed the first airline stewardesses goingaboard a Boeing ... ...

The year 1930 witnessed the first airline stewardesses going aboard a Boeing San Francisco-Chicago flight, a trip that took 20 hours and made 13 stops.
(A) flight, a trip that took 20 hours and made 13 stops.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in 10 Minute Writing