Woofers had the opportunity to build a plant to produce snoods. The investment required is $150, and the plant is expected to return $20 in perpetuity. The discount rate is 10 percent. It has just come to the attention of Woofers management that they can delay the plant for 1 year. The possible returns, if delayed, are $22 per year in perpetuity or $10 per year in perpetuity. The risk-free rate is 7 percent. Which should Walters do-invest now or delay making the decision for 1 year?