Sentence Correction

In no other historical sighting did Halley's Comet cause such a worldwide sensation as [u]did its return in 1910-1911[/u]
a. did its return in 1910-1911
b. had its 1910-1911 return
c. in its return of 1910-1911
d. its return of 1910-191 did
e. its return in 1910-1911


I don't know what what rule is being tested..

IMO A