Which of the following statements are true regarding the sizing of drainage systems and the rate of rainfall? (Check all that apply.) Hint: Section 10.7 Select one or more: A. A "per 100-year return" on rainfall intensity indicates a 1% probability of occurrence each year. B. Collaboration among architects, structural, and plumbing engineers is crucial for optimal drainage system design. C. Overdesigning for rainfall intensity is always desirable since it ensures faster stormwater drainage but does not cause economical inefficiency. D. The size of the drainage system is dependent on the rate of rainfall, not the total amount of rainfall over a given period. E. Underdesigning will cause inconvenience, safety hazards, economical inefficiency, or possible structural failures