Consuming Fiber Can Be the Cause of Constipation, but Fiber

Consuming fiber can be the cause of constipation, but fiber is important. How does one avoid constipation and still ingest fiber?

A) Reduce the amount of fiber to a very small portion of the diet.
B) Ignore the recommendations and don't eat fiber.
C) Drink plenty of water along with the suggested amount of fiber.
D) There is no way to avoid problems when eating fiber.