GMAT Sentence Correction (SC) | Re: South Pacific Vacations has a package tour to Sydney, Australia, for

South Pacific Vacations has a package tour to Sydney, Australia, for $999 per person, including airfare from Los Angeles,spending five nights at the Mega Hotel, and to take a harbor cruise, and round-trip airfare from New York is an additional $400.

A.spending five nights at the Mega Hotel, and to take a harbor cruise, and round-trip airfare from New York is
B. spending five nights at the Mega Hotel, and taking a harbor cruise; and in addition round-trip airfare from New York is
C. five nights