Help me pls

Scientists get information from conferences with one another, but . A. they don't cite those sources of information
B. the information they get there is very unreliable
C. people who aren't scientists don't usually attend
D. any information they get needs to be checked in a book

Suppose you found the following information in a book called Polar Bears by George Williams, published in 2010:
Polar bears usually have white fur because they live in places that are covered with snow and ice. They sometimes hunt seals by waiting for them to come up through the ice to breathe.

Which of the following correctly quotes information from the source?
A. Polar bears like to eat seals (G. Williams, 2010).
B. "Polar bears like to eat seals" (G. Williams, 2010).
C. Polar bears usually have white fur (G. Williams, 2010).
D. "Polar bears usually have white fur" (G. Williams, 2010).