A drop (or fall) in a canal bed is generally provided if the:

Select the option that is appropriate regarding the following two statements labelled Assertion (A) and Reason (R): Assertion (A): To prevent waterlogging, intercepting drains can be provided along the course of irrigation canals in places where the percolation of water is detected. Reason (R): The percolating water is intercepted by drains and the water is carried to other natural water courses.

Khosla's safe exit gradient for the design of a weir will be the lowest for which of the following soil types?