A client tells the nurse, "I increased my fiber, but I am still very constipated." What additional information should the nurse provide to the client?

"Well, that shouldn't happen. Let me recommend a good laxative for you."

"Just give it a few more weeks and you should be fine."

"I will tell the doctor you are having problems. Maybe he can help."

"When you increase fiber in your diet, you also need to increase fluids."