Select the Statement That Best Explains Why Increased Dietary Fiber

Select the statement that best explains why increased dietary fiber is a major component in the management of constipation.

A) Fiber increases stool bulk and fluid content and decreases transit time, resulting in an increase in the frequency of defecation.
B) Fiber decreases stool bulk and fluid content and increases transit time, resulting in a decrease in the frequency of defecation
C) Fiber decreases the microorganisms in the GI tract, increases the fluid content, and decreases transit time, resulting in an increase in the frequency of defecation
D) None of these are correct.