Finish the following sentence with the best choice: How do you boil sweet potatoes?

Choices:
- Boil until potatoes are tender when pierced with a fork, 15 to 20 minutes. Note, it will take less time if you cut the sweet potatoes in smaller pieces.
- Boil until potatoes are tender when pierced with a fork, 15 to 20 minutes. Note, it will take less time if you mix the sweet potatoes in smaller pieces.

Answer:
Boil until potatoes are tender when pierced with a fork, 15 to 20 minutes. Note, it will take less time if you cut the sweet potatoes in smaller pieces.