Which of the following is true? Decreasing the required discount rate will decrease the net present value of a project. If a project has a net present value of zero, we can tell that the project requires no initial cash investment If a project has a net present value of zero, we can tell that the summation of all the project's cash flows is zero. Increasing the value of each of the project's discounted cash inflows will decrease the net present value of a project. Net present value method predicts the amount by which the value of a firm will change if a project is accepted