A person just graduated from high school and is debating between starting to work directly and going to postsecondary education. Assume this person makes the decision in period 0 and will retire after period 5. Based on his estimates:

- Plan A. If he starts to work directly, his salary in period 1 will be $1000, and his salary will grow at a rate of $1000 per period.

- Plan B. If he chooses to go to college, he will need to pay a tuition of $1000 in period 1. When he starts to work, his salary in period 2 will be $1500, and his salary will grow at $2000 per period.

- Plan C. If he chooses to go to a master's program after college, his starting salary will be $3000 in period 3, and his salary will grow at $3000 per period. But he will have to pay $1500 for the master's program in period 2.

- Plan D. If he continues to a PhD program in period 3 after his graduate program, his starting salary in period 4 will be $8000, and his salary in period 5 will be $15000. The tuition for the PhD program is $2000.

1)Complete the following table of this person's cash flows.

2) If this person has a discount rate of 5%, what will be his decision?

3) If this person has a discount rate of 15%, what will be his decision?

4) If this person has a discount rate of 25%, what will be his decision?