Suzi will graduate from high school next June. She has ranked her three possible postgraduation plans in the fallowing order: (1) Work for two years at a consulting job in her home town, paying $20.000 per year (2) Attend a local community college for two years, spending $5000 per year on tuition and expenses (3) Travel around the world tutoring a rock star's child for pay f $5000 per year. What is the opportunity cost of her choice