If you wished to value a corporate project for a firm, what method described below would likely give a decent (if not perfectly accurate result)?
A) Add benefits and deduct costs, discounting each by a rate determined from a model. If the sum is positive, invest, otherwise do not invest.
B) Add benefits and deduct costs. Multiply the sum by the discount rate. If the total is greater than 1, invest, otherwise do not invest.
C) Add benefits, divide by total costs. Subtract this figure from the discount rate. If the total is greater than 0, invest, otherwise do not invest.
D) Add benefits, divide by total costs. Subtract this figure from the discount rate. If the total is less than 0, invest, otherwise do not invest.
E) As investment is inherently risky and certain, there is unfortunately no method to estimate the value of a firm project.