Cash inflows are revenues of project and are represented by

hurdle number
relative number
negative numbers
positive numbers

The correct answer is D. Positive numbers.

Cash inflows are revenues of a project and are represented by positive numbers. This is because cash inflows represent money that comes into the project, which is a positive thing. Hurdle numbers, relative numbers, and negative numbers are all used in different contexts, but they do not represent cash inflows.

A hurdle number is a minimum level of performance that must be met in order for a project to be considered successful. A relative number is a number that is compared to another number in order to determine the relative performance of two things. A negative number is a number that is less than zero.