15. The author of Passage B uses the phrase “whittle away” (line 80) to refer to the way that apple varieties have been:

  • A. gradually lost from nursery catalogs, farmers’ markets, and the American table.

  • B. modified by plant breeders, entomologists, and pathologists to meet specialized needs.

  • C. weeded out by scientists until only the few thousand most resilient varieties remained.

  • D. pared down in 1904 to the few varieties that nursery catalogs wanted to feature