Please indicate whether the following statements are true or false by placing a "T" or "F", respectively, in front of each statement. (20%) (a) The water content cannot exceed 100%. (b) The degree of saturation can exceed 100%. (c) An A-2-6 soil is considered less suitable for road construction than an A-4 soil. (d) From Darcy's law one could infer that the rate of fluid flow through a soil should be directly proportional to the viscosity of the fluid flowing through the soil. (e) One means of increasing the safety factor against boiling or piping for a gravity dam would be shorten the distance of the flow between the headwater and tailwater.