The following question has two parts. Answer Part A first, and then Part B.

Part A
Which sentence from the passage best states the main idea?
A. Hiking the Appalachian Trail is a difficult but memorable experience.
B. Everyone I know who has done it recalls the experience even if he or she did it decades ago.
C. Last summer, my brother, a few of my friends, and I decided to give it a try.
D. My credo is "If you think you can do it, then do it!"
Part B
Which sentences from the passage best support the main idea identified in Part A?
A. sentences 2 and 14
B. sentences 3 and 8
C. sentences 3 and 10
D. sentences 6 and 11