Read the following sentence from the excerpt.

(10) In my room I sat down and tried calmly to reason out the matter. Here was I, Theobald Jack Pansay, a well-educated Bengal Civilian in the year of grace 1885, presumably sane, certainly healthy, driven in terror from my sweetheart's side by the apparition of a woman who had been dead and buried eight months ago.

Which definition would best define apparition in the passage?

A.
an unusual or unexpected sight
B.
phenomenon
C.
a ghostly figure
D.
the act of becoming visible