You are given the following equation:

$-C{F}_0+{\displaystyle \underset{t=1}{\overset{n}{}}}\frac{C{F}_t}{(1+r{)}^t}=0$

Which one of the following best describes this project?

The project has zero cash outflow.

The project's internal rate of rate should not be the $r$ in the equation.

The project's cash inflows equal its cash outflows in the current dollar amount.

The summation of all of the project's cash flows is zero.

The project has a zero percent rate of return.