【单选题】Stupendous prices were paid in a historic sale of 19th- and 20th-century avant-garde paintings collected over a lifetime by John Hay Whitney and his wife, Betsy Cushing Whitney, Picasso's 'Garcon à la...
A.
the third is a subcategory of the second.
B.
the third is the logical cause of the second.
C.
the second generalizes and the third gives examples.